Potential of Marketing Communication as a Sustainability Tool in the Context of Castle Museums

: Based on the OECD research from 2020, tourism is one of the biggest and fast-growing sectors of the world economy. Tourism plays a key role in job creation as well as in added value creation. In 2018, the revenue from tourism in Slovakia totaled EUR 2.7 billion, which is EUR 4.7% more than the year before, where the mentioned refers to 3% GDP and 27.6% of the services-related exports. The authors drew their attention to identifying some marketing communication tools’ impact on the castle museum attendance in Slovakia and analyzed the degree and dynamics of the communication structure implementation in the context of cultural heritage. In general, 5840 cultural tourists were interviewed during three restricted cycles: 2006–2009, 2011–2014, and 2016–2019; the interviewing was held through the questionnaires only during the summer seasons. The study herein shows that the quality perception of the carried out ofﬂine marketing communication activities and the visit intention itself have signiﬁcant inﬂuence on the interest of customers in repeated visits to castle museums.


Introduction
Tourism is a dominant source of jobs on a global level [1], and there is also a meaningful quantity of indirect work engagement in construction and infrastructure development, along with the work of providing food, drinks, and souvenirs to tourists [2].
All cultural agents participate in the production and distribution of cultural goods and services, while governments and their institutions have additional duties to incorporate cultural rights into legislation and elaborate cultural policy [3].
Culture is the essence of tourism [4] when it is content-rich and meaningful for tourism development [5]. On the other hand, tourism may support cultural sustainability when it becomes a valuable tool for the preservation of tangible and intangible heritage and the diversity of cultural expressions [6].
Cultural policy is an administration instrument for culture-related issues. This view is also shared by the culturologist Zuzana Slušná [7], who defines cultural policy as the governance and management of culture, mainly by authorities, that create and handle the material content of artworks. Cultural policy is mainly understood as a set of propositions and actions implemented by governments for the promotion and support of cultural practices and values [8]. Traditionally, it is concerned with providing support for the arts and cultural heritage institutions, but it has expanded, and now includes areas such as cultural industries, urban development, and tourism, encompassing a wide range of cultural products [9]. The models of cultural policies differ significantly in each national or regional case [10][11][12].

Theoretical Backround
At the beginning was arts marketing concerned with "marketing as a set of techniques" such as promotion, pricing, and market segmentations [45]. In other words, the tactics from marketing in commercial sectors were directly applied into arts to increase the sales of tickets [46]. The proliferation of research in arts marketing has led the discipline "from marketing as a functional tool to marketing as a business philosophy and strategy" [47].
For the museum environment, marketing communication plays a vital role [48]). It is not only focused on addressing the existing audience [49] but also the potential visitors who have not shown any interest in the given institution yet [50]). Moreover, it performs as the challenging task of creating a powerful feeling and sense of credibility, satisfaction, and security (repeated affirmation).
Marketing communication creates an exposed past of museum management [51,52]. The evaluation of the effectiveness of marketing communication is done based on the comparison of results achieved within the objectives, set in the marketing plan [53]. These objectives, however, might be identified not just as direct economic objectives [54][55][56][57] but also as communication objectives [49,58]). Consequently, the effectiveness of marketing communication might be monitored from at least two perspectives: the economic impact as well as the communication one [59].
Economic effectiveness is associated with the provision and monitoring of only economic indicators [54,55], which, in a museum environment may be considered the change in the sold volume of entrance tickets for exhibitions or the amount of profit on turnover from the rent of historic premises as such indicators. The sales impact of marketing communication with evaluation measurement are treated as more complex issues than only the measurement of communication effects [60]. The reason why this aspect is more problematic is connected with the challenge of saying to what extent some progress in museum attendance is influenced by effective marketing communication. Marketing communication comprises only one element of the marketing mix, but a great number of various factors, for example, the product itself [55], the museum and its value [54], and competition in the leisure-time market [61], might influence the sold volume of entrance tickets for exhibitions.
Thanks to the evaluation of different marketing communication tools and their effectiveness [62,63], museums can now target and plan their communication activities. It is generally recognized that each museum should find the best possible presentation form and specific method of marketing communication, which would help the museum to set itself apart from the crowd [64]. Marketing communication tools should be deployed in an integrated manner to ensure the message consistency and maximum impact [65].
The museum marketing communication process itself is based on the constant communication with visitors [61], where the basic communication pillar is formed by the promotional or communication mix, currently known as offline marketing communication tools.
Institutions with the focus on cultural heritage management might also use one of four forms of advertisement for their better visibility: • advertisement to promote the institution, its name, and image; • advertisement to promote the product, means exhibition; • advertisement to promote a one-time event or social occasion; • advertisement aimed at raising the awareness of visitors, for example, by museum club membership [66].
The preparation of a museum's communication strategy should build on properly planned activities and procedures [63] that are appropriate for cultural tourism temples, to identify the level of relative importance, and to allocate advertisement costs considering the other elements of the promotional mix [67]. The decision should be based on the marketing research results [68,69], the knowledge of the market [70], the most precise visitor segmentation per chosen targeted groups [71], and the choice of advertising means should be built on the strategic objectives of the museum. Only on this basis is it possible to specify the objectives of each advertising campaign and choose the correct content, timing, and available channels, where timing in particular applies to the time-limited offers, for example, exhibitions. In practice, the museum utilizes communication mix means in conformity with the marketing communication objectives of the given historical site and marketing, or rather, the communication strategy [72] of the museum as well as its financial possibilities [73,74].
Public Relations provide a great alternative to almost all advertisement drawbacks [75], which is of vital importance to non-profit organizations. Even in the case of culturalproperty customers, who are more advertisement-resistant, public relations allow greater space for attracting the consumers' attention [75,76] towards a specific historical site. Public relations in museums and cultural institutions might be considered as a part of marketing and communication activities [61]. At the same time, they can be a precursor for further museum marketing activities, and in the minds of customers and specific targeted groups, they may evoke a positive attitude towards the institution [77]. As public relations influence the public opinion, not only they have an impact on museum attendance but also on fundraising from state and private sectors.
Although the face-to-face trade is a matter for the commercial segment [78], it also has an irreplaceable role in the field of culture [79]. Museum presentations during different expos and exhibitions represent the most common tool [65,80] in the battle for public attention toward the organization. In historical sites, face-to-face trade is assigned to individual employees, museum guides; in turn, they give the museum services their unique creative contribution and create their variations and quality. Depending on the inventiveness, willingness, and disposition of museum guides, customers are satisfied with museum tours and might consider another visit in the future. A visitor feels when the guide himself is engaged in the tour, when he has a special relationship to the historical site (for example the castle), and when the guide does not only tell memorized phrases but invests a part of his own experience, interesting facts, and memories into the tour [77]. Such a personal approach enhances the credibility of the organization, strengthens customers' experience, and thus reinforces the service quality. Museum guides become the so-called brand ambassadors [81]: they represent the museum or some particular exhibition brand.
In the museum environment, the sales support is given in a financial form [82]). In museum practice, this comes in different discounts for entry tickets for some customer categories [83] or in the form of "free entrance days". In Slovakia, such days are set on the first Sundays in a month, when museums, under the authority of the Ministry of Culture of the Slovak Republic, do not charge their entrance fees. European Night is a similar type of event for museums and galleries abroad [84], when during one May night, all the museums are opened and charge-free, eager to show all professional activities and initiate visitors into the mysteries of museum cuisine. For several years, a similar event has been taking place in our country as well.
The COVID-19 pandemic has had a meaningful influence on the tourism industry as a result of travel restrictions together with a collapse in the demand from the part of potential tourists [85]. The travel businesses have been greatly hit by the spread of COVID-19, as a lot of states have instituted travel constraints and are trying to keep the spread under control, which led to the stop of the whole sector [86,87]. Research by the BBC revealed that in multiple areas of the world, organised trips decayed by 90% [88]. Divergent and one-sided travel boundaries happened locally, and plenty of tourist sites visitation across the globe, such as museums, amusement parks, and sports venues, stopped their operation [89]. We can assert that tourism is one of the hardest-hit sectors by the pandemic, and it requires quick and complex mobilization. Tourism entities should focus on the development of activities, which would allow tourism to recover from the effects of pandemic.
The opportunities to strengthen the territorial development by enhancing of the cultural heritage are not always consensually agreed upon. Conflicts arise when there is a lack of coordination between the preservation of tangible and intangible cultural values for local communities and the heritage marketing based on customer needs [90].
The creation of an effective marketing strategy according to current trends is the key process needed to achieve the sustainable growth that can result in attracting the great number of existing as well as potential customers [91,92]. Marketing strategies could help museums to fill up their mission and maximize customer satisfaction [61]). Furthermore, modern marketing components can largely contribute to museum financing [93,94]. The presented study is aimed at the research and the potential of marketing communication tools in the context of castle museums to increase museum attendance and promote awareness of customers about cultural heritage and its sustainability. The authors draw their attention to the impact of individual marketing communication tools on the attendance of investigated historical sites, to analyze the level and dynamics of communication infrastructure implementation in the cultural environment.

Materials and Methods
The goal of the study is aimed at the identification of individual marketing communication tools with their impact on the attendance of investigated historical sites and the analysis of level and dynamics of implementing the communication infrastructure in the cultural heritage environment.
Historical buildings, presented under the notion of historical sites, were chosen as the object of the study, and under this category belong castles, marked in museum classification as castle museums. The objects are situated in the territory of the Slovak Republic, from the north to the south, from the east to the west, and each of them is located in different territorial unit (self-governing region). From the local as well as foreign customers' interests, such castle museums are ranked among the most attractive cultural exhibitions in Slovakia. The main criterion in choosing the sites was the existence and availability of requested figures and secondary data where the comparison of individual investigated castles covers several common multiple criteria: • registration in the Central List of Cultural Heritage of the Slovak Republic; • offering of services for the general public throughout the year; • a part of Slovak history and national identity; • receive regular transfers commonly known as internal or foreign grants for their activities and development; • have more than 1000 expert-registered museum items; • in the terms of human resources, they recruit on permanent employment and work agreements; • core museum product is created permanent exhibition (sightseeing tour) • exhibitions are available only with the supervision of the museum guide (lecturer) who provides interpretative services to museum customers. Audio guides might be used for additional customer communication activities; • provision of a wide scale of cultural, educational, and recreational activities; The process of actual data acquisition took place continuously, throughout the year, with the regard to the opening hours of the historical sites and the individual field-research days for data collection were randomly chosen. The basic measured set includes all castle museum customers, and the sample contains data from the customers who visited the castle museum during the field-research days. In other words, the sample was selected by quota sampling. When choosing the respondents, the method of appropriate opportunity was chosen, so the approached respondents were only Slovak-speaking customers who visited an exhibition, participated in animation activities, or attended a sociocultural program, and in total, 5840 cultural customers participated in the research during all three restricted cycles.
During the primary information gathering period from 2006 to 2009, the method of writing was used, in other words, the handed-out paper questionnaires. Later, during the periods 2011-2014 and 2016-2019, visitors filled in the questionnaires in the Google Forms application on a tablet with Internet access. In the terms of methodology, we focused on the existence of the psychological barriers of the respondents to respond to technology-intensive and content-extensive questionnaires. Based on these facts, we chose the most adequate questionnaire extent to eliminate possible technical issues and to make it less time-consuming. While creating questions, we focused on their mutual symbiosis. Ten questions on facts and five sociodemographic questions were offered in the Slovak language on three pages, and for the purpose of this paper, the answers to the following six questions from the questionnaire were processed: What was the purpose of your visit? How many times have you visited this castle museum?
Will you visit this museum in the future?
What were the information sources and how did you learn about the museum?
How do you rate the museum's website?
How do you rate the museum's communication via social media?
We aimed to receive the most indicative answers to enable their usage for making conclusions that leads to future recommendations. The foundation for the methodology was the necessity of gathering the data not just for the castle museums but also for the individual historical sights. Respondents answered via the scale from one to five-the 'indefinite answers' were included. The returnability rate of questionnaires in individual historical sights was 100%, as every visitor filled in the questionnaire along with buying the entrance tickets, and statistical analysis was conducted in SPSS software.
Considering the current trends were the use of marketing communication tools has an enormous positive economic impact on the subjects that can use them effectively, the authors were eager to identify the key aspects of available tools to maximize the tool potential for the benefit of objects under investigation. In research terms, the authors have targeted interview questions connected with offline marketing communication activities and repeated visits to castle museums from the customers' side. Based on the abovementioned examination, the authors focused on the issues as follows: • Vo1: Is there a dependency between the quality of offline marketing communication activities and the intention of customers to visit the castle museum repeatedly? • Vo2: Is there a dependency between the events organization and the intention of customers to visit the castle museum repeatedly?
Coming out from the stated research questions, the authors proposed two research hypotheses: Hypothesis 1 (H1). The quality perception of implemented offline marketing communication activities has a significant influence on the customers´interest to visit castle museums repeatedly.

Hypothesis 2 (H2).
The intention of visiting the castle museum itself has a significant influence on customers´interest to visit the castle museum repeatedly.

Data Analysis
The effect of evaluating the quality of offline activities, as well as the influence on the intention of visiting and the subsequent repeated visits to the objects under investigation, was assessed by fitting two separate cumulative-link mixed effect models (CLMM; 'ordinal' package in R) [95]. In both models, a random interception was estimated to the account for ratings, nested within the objects. The Gauss-Hermite quadrature approximation [96] of the maximum likelihood function with logic link function was used to fit the models, and likelihood ratio tests served to derive statistical significance values (p). For the first model (offline activities), the effects of evaluations were tested against the reference 'Cannot evaluate'. In the second model, the effects of the intention of an individual to visit an object were tested against the reference 'Exposure' intent of a visit.

Results
Our research has primarily focused on the reasons that played the key role in deciding to visit a certain castle museum.
The results from the period from 2006 to 2009 had shown essential and statistically significant difference between museums, with χ 2 (12) = 3729.23, p < 0.001, Cramer's V = 0.811. In Museum A, visitors unequivocally chose social events that statistically dominated in 92.3% of the responses. However, in Museum B, different values prevailed: almost all respondents (97.4%) chose the permanent exhibition as a reason for their visit. The situation in Museum C was slightly different compared to Museum B, with 65.3% of responses for a permanent exhibition as the reason for their visiting. However, Museum C, when compared to Museum B, showed higher interest in seasonal exhibitions, accounting for almost one-third of respondent answers (34.7%). In Museum D, answers on educational program visits, which were marked by 92.5% of respondents as the reason for visiting, were statistically significant. Such rating is directly related to the previous question on the economic status of visitors, which was, for this individual historical site, made by a higher percentage of students. Museum E received 100% of visitors' attraction from the permanent exhibition.
During the period from 2011 to 2014, the high and statistically significant difference between museums was repeated: in the social occasion interest, which accounted for 82.6% of all answers, but the interest in permanent exhibition went up (15.1%). Museum B faced a noticeable fall in permanent exhibition interest (68.5%), which showed that more than two-thirds of visitors preferred the social events to the exhibition. The same 68.5 percent rate was identified in Museum C for the interest in the exhibition, which increased when compared to the previous research period. In Museum D, visitors were separated into three groups where the highest rate of 67.4% was for the permanent exhibition. In Museum E, the interest in permanent exhibitions decreased by 23.4% to the benefit of the social events.
The evaluated data from the third period from 2016 to 2019 also showed obvious and statistically significant differences between museums, with χ 2 (12) = 3026.33, p < 0.001, Cramer's V = 0.707. However, the difference was not as striking as from two previous research periods of 2006 to 2009 and 2011 to 2014. In Museum A and Museum B, there was an increase in the visitors' interest in social occasions and the rates reached 100% and nearly 90%. Museum C was able to keep the stable interest in seasonal exhibitions, however, a slight 3,9% decrease in the interest could still be seen compared to the previous research period. The most intense change had occurred in Museum D, where interest in the permanent exhibition almost reached zero points, and more than 80% of visitors showed interest in social events. In Museum E, the situation from the years 2006-2009 was repeated: all visitors marked the social events as their visit reason, which contributed to the statistical significance of the given value.
Following a brief review, three museums have their permanent visitors in terms of preferences. Museum A is visited by those who prefer social events, Museum B is preferred by those who are looking for seasonal exhibitions, and Museum E is visited due to the permanent exhibition.
In the context of the study, the authors were investigating whether visitors of individual castle museums would repeat their visit to historical sites sometimes in the future.
Respondents were asked to evaluate their probability of repeated visits based on the scale from one to five-including the 'indefinite answer'. From the data comparison from individual museums was noted a statistically significant difference in repeated visit probability rate where H(4) = 401.84, p < 0.001, η H 2 = 0.068. The museum has shown the lowest probability rate of repeated visits in comparison with other museums with Z ≥ 5.228, p < 0.001. In museum II, there was a lower probability rate of repeated visits when compared to museums V and III, where Z ≥ 8.513, p < 0.001, and there was a distinctly higher probability rate of repeated visits in museum I, where Z ≥ 3.216, p ≤ 0.013.
Subsequently, the authors statistically evaluated the predicted probabilities of repeated castle museum visits as an estimate of the evaluated quality of offline marketing activities with p < 0.001 against the reference evaluation (Tables 1 and 2).

Effect of Evaluated Quality of Offline Activities on Consideration of the Repeated Visit
The authors found a sound impact of the evaluated quality of offline marketing activities on the decision to visit an object repeatedly, χ 2 (3) = 4417.6, p < 0.001 (Table 1). In particular, while positive evaluations were associated with a significantly higher chance to visit an object repeatedly, the poor evaluations predicted a significantly higher chance for not visiting an object again, or in other words, the lower probability of visiting an object again (Table 2 and Figure 1).

Effect of Evaluated Quality of Offline Activities on Consideration of the Repeated Visit
The authors found a sound impact of the evaluated quality of offline marketing activities on the decision to visit an object repeatedly, χ 2 (3) = 4417.6, p < 0.001 (Table 1). In particular, while positive evaluations were associated with a significantly higher chance to visit an object repeatedly, the poor evaluations predicted a significantly higher chance for not visiting an object again, or in other words, the lower probability of visiting an object again (Table 2 and Figure 1). Based on the findings, we can confirm the hypothesis H1: The perception of the quality of implemented offline marketing communication activities has a significant influence on customer's interest to visit castle museums repeatedly.
The authors statistically evaluated predicted probabilities of repeated castle museum visits as an estimate of the visit intention p < 0.001 against the reference evaluation (Tables  3 and 4  Based on the findings, we can confirm the hypothesis H1: The perception of the quality of implemented offline marketing communication activities has a significant influence on customer's interest to visit castle museums repeatedly.

)
The authors statistically evaluated predicted probabilities of repeated castle museum visits as an estimate of the visit intention p < 0.001 against the reference evaluation (Tables 3 and 4

SEffect of Visit Intention on Consideration of Repeated Visits
The intention of the visit had a statistically significant impact on the chance of repeated visits, χ 2 (3) = 725.8, p < 0.001 (Table 3). However, only the intention of visiting an object to attend an event was found to be the one significantly associated with higher probabilities of repeated visits to the given castle museum. There was also a small-but not significantrelationship between the intent of visiting to attend an exhibition and smaller probabilities to visit an object again. No other intentions for visiting an investigated objects were associated with higher or lower chances for repeated visits (Table 4 and Figure 2).

SEffect of Visit Intention on Consideration of Repeated Visits
The intention of the visit had a statistically significant impact on the chance of repeated visits, χ 2 (3) = 725.8, p < 0.001 (Table 3). However, only the intention of visiting an object to attend an event was found to be the one significantly associated with higher probabilities of repeated visits to the given castle museum. There was also a small-but not significant-relationship between the intent of visiting to attend an exhibition and smaller probabilities to visit an object again. No other intentions for visiting an investigated objects were associated with higher or lower chances for repeated visits (Table 4 and Figure 2). Based on the findings, we can confirm the hypothesis H2: The intention of visiting the castle museum itself has a significant influence on customer's interest to visit the castle museum repeatedly.

Discussion
Currently in Slovakia, under the auspices of the Ministry of Transport and Construction, a new strategy for sustainable tourism development is being prepared which should guide a long-term tourism development until 2030 and should consider new ways of coordinating tourism to support SMART solutions as well as the governmental approach, the ways of presenting Slovakia as a tourism destination, promoting the solutions that can support the development of sustainable tourism, the ways of maximizing the protection and preservation of natural and cultural sources in the country, Based on the findings, we can confirm the hypothesis H2: The intention of visiting the castle museum itself has a significant influence on customer's interest to visit the castle museum repeatedly.

Discussion
Currently in Slovakia, under the auspices of the Ministry of Transport and Construction, a new strategy for sustainable tourism development is being prepared which should guide a long-term tourism development until 2030 and should consider new ways of coordinating tourism to support SMART solutions as well as the governmental approach, the ways of presenting Slovakia as a tourism destination, promoting the solutions that can support the development of sustainable tourism, the ways of maximizing the protection and preservation of natural and cultural sources in the country, and along with that, supporting the development of the before-mentioned tourism assets [97].
In connection to the achievement of the objectives of the aforesaid strategy, marketing communication plays a key role in the management activities of the castle museums. With marketing communication techniques, not only the sales volume objectives of the museum products can be achieved, but also the level of the awareness of museum image can be improved, and the last might directly increase the museum attendance.
Multiple studies confirm the importance of utilizing marketing activities to ensure or even improve the attendance of cultural heritage-related objects [98][99][100]. Based on the findings from the study provided by: - The robust effect of evaluating quality of offline activities on consideration to repeatedly visit an object, χ 2 (3) = 4417.6, p < 0.001); -intent of a visit had statistically significant effect on the consideration to repeatedly visit an object, χ 2 (3) = 725.8, p < 0.001), it can be confirmed that the implementation of offline marketing communication tools in castle museums have impact on the customers' interest in repeated visits to the castle museums, which is the key to long-term sustainability.
Each organization that deals with cultural heritage should have in the context of its marketing concept a carefully planned communication algorithm on the audience development. The main purpose of such an algorithm is the methodology structuring that would help historical sites in setting their message and campaign objectives, verifying the level of interest in the campaign cooperation among site workers and guarantors, creating an action plan with a consequent communication mix, managing communication activities, and overall outcomes. However, the aforementioned actions might be put into effect only after understanding the needs for change and thorough verification of minimum prerequisites for the targeted audience development. Successful campaigns might ensure an increase in visits and the application of a structured methodology for audience development for any targeted visitor segment can be implemented. Figure 3 presents a draft of a systematic, nine-step audience development sequence for castle museums. The need for change Castle museum should, at regular intervals, monitor the volume of visits in clos interaction with the visitor research activities. Based on such research activities and resu indicators, the museum gets a clear picture of the unused capacities for audienc development in a particular segment, so it is appropriate to fill in the emerging gap t increase museum attendance, and this is called the need for change.
Minimum prerequisites At this stage, we should consider at least the minimum prerequisites that migh ensure the full development of relations with potential visitors in the castle museums. Th essential preconditions should cover sufficient human capacities to support relationshi marketing and creative event organization.
Identification  The need for change Castle museum should, at regular intervals, monitor the volume of visits in close interaction with the visitor research activities. Based on such research activities and result indicators, the museum gets a clear picture of the unused capacities for audience development in a particular segment, so it is appropriate to fill in the emerging gap to increase museum attendance, and this is called the need for change.
Minimum prerequisites At this stage, we should consider at least the minimum prerequisites that might ensure the full development of relations with potential visitors in the castle museums. The essential preconditions should cover sufficient human capacities to support relationship marketing and creative event organization.
Identification of the targeted audience The third point covers communication and segmentary targeting, in other words, the targeting of some individuals. Here we are talking about the selective specialization or detailed identification of particular-specific-audience segments that could be confined, in the future, to potential customers. In practice, this means a careful selection of sociodemographic profiles, including definite preferences for the core museum environment.
Communication objectives Historical sights should set their communication missions, including proper set up objectives. The SMART method might be used for accomplishing this task, and the objectives should be specific, measurable, assignable to the performed task, affordable, realistic, and time bound.
Organizational will This methodical step might be marked as a turning point. Once the castle museum fails to obtain support from its guarantor, other co-workers, and experts, then the communication algorithm ends. In the case of positive organization will, the algorithm leads us to the further step.
Action plan The sixth step includes the creation of the action plan where the specific tasks should be established along with precise deadlines, personal responsibilities, expenses, and evaluation prerequisites.
Communication mix By choosing appropriate communication tools and media, the castle museum creates a communication mix. The marketing department of the historical site, after several meetings on the subject, chooses particular communication tools, which should be aligned with the set objectives, and through the communication tools, the castle museum can communicate its messages to the targeted audience. Implementation As the next-to-last step, it is the time to implement all the planned activities, including campaign schedule, personal responsibilities for communication activities, communication infrastructure management, and to stay within the allowed budget. Evaluation In the final step, management should evaluate the communication campaign based on the results achieved, which includes the extent verification to which the objectives towards the chosen targeted group were achieved. In case the castle museum management identifies a number of shortcomings, the responsibility must be defined together with the decision on further campaign steps, whether the campaign will be repeated or modified in any possible way. The evaluation process itself depends on museum management, who should decide whether evaluation should take place regularly or at the very end of the campaign.
All in all, the management of the communication algorithm of audience development should base on the objectives set by museum management. Museum management intentions to increase the number of visits might be translated into the creation of an appropriate communication mix, and while creating the communication mix, it is good to keep in mind that the majority of historical sites are under the public sector, and their main objective is not to increase attendance at all costs but to protect and preserve cultural heritage for future generations. Furthermore, one of the public sector objectives for museums as tourist attractions is to be a catalyst for regional development and a tool for improving the image of a particular region.
While creating a marketing strategy, we recommend castle museums to keep in mind four aspects that determine each strategy. These are the exhibitions and historical site missions, customer satisfaction, public benefit, and quality as the objectives. As to the implementation of the strategy, castle museums should pay attention to the balanced position of the exhibition and customers, which means to not focus separately on the exhibitions and the customers but rather on the synergy between them through marketing and marketing communication. The balanced approach-customer vs. exhibition-is very common among the most famous foreign museums and is widely applied in practice [65,101]. The success of such implementation derives also from the quality of the offered services, which should be one of the objectives of the historical site. Different studies show that the visit intention is an essential criterion for customer choice, whereas the ticket price seems almost irrelevant [100].

Conclusions
If castle museums want to become a modern part of society, and not just a place where collections are stored, marketing and communication with the general public should not be of secondary importance. Marketing and communication with the general public should be instead the activities that are incorporated into the entire administration with due respect for the financial provisions and staff capacity.
Based on the results herein can be claimed that new events as a part of provided customer services will not just stabilize and improve the attendance of historical sites but might have a positive impact on the image building. In recent years, various events are particularly popular among castle visitors, but for every individual segment, an appropriate communication approach tied to the overall marketing strategy should be chosen.
Taking into consideration the fact that data acquisition took place before the pandemic as well as taking into consideration the current fast-growing digitalization and the trend of new technology implementation among tourism entities, it is required to recollect the data to identify particular changes brought by the aforementioned trends.