1. Introduction
Cultural heritage refers to tangible artifacts and intangible attributes passed down in a community or culture [
1]. It plays a vital role in establishing identity, maintaining history, and promoting a sense of belonging [
2]. Safeguarding cultural heritage entails the preservation of cultural diversity for future generations and the cultivation of social cohesion through collective recollections and common experiences [
3,
4]. The Sustainable Development Goals (SDGs) established in the United Nations 2030 Agenda emphasize that safeguarding cultural heritage for future generations is essential to ensuring its sustainability [
5]. As practices evolve, the synergistic development of heritage conservation and tourism has emerged as a new approach to preservation. It is the purpose of heritage tourism that public awareness and appreciation of history and natural scenery are awakened through travel activities [
6]. Cultural heritage tourism offers opportunities to understand historical sites, customs, and festivals [
7], providing pathways for public access to heritage. It encourages visitors to actively participate in heritage dissemination and value creation while experiencing cultural diversity [
8]. Furthermore, it serves as a vital channel for fostering cultural industry innovation, strengthening community cohesion, and revitalizing local economies [
9]. However, overtourism negatively impacts the sustainability of tourism destinations and the quality of local residents’ lives [
10]. Numerous challenges are faced when trying to develop cultural heritage sites in a sustainable way. Furthermore, gradual changes in temperature, precipitation, humidity, and wind conditions can accelerate the physical, chemical, and biological weathering processes affecting outdoor cultural heritage sites [
11], as well as the comfort levels of visitors [
12]. These include landscape fragmentation, community building, tourism development, and heritage management issues [
13]. Yet, simply restricting visitor numbers and tourism development may impose economic burdens on underdeveloped regions [
14]. How to develop sustainable tourism remains a subject of widespread attention among researchers and practitioners [
15], particularly in the context of developing countries [
16].
Sustainable tourism is a responsible approach that considers the impacts of tourism on environmental management, cultural continuity, and economic benefits [
8]. The World Tourism Organization (WTO) has identified 11 key indicators of sustainable tourism, which are categorized into 4 domains: ecological, social, economic, and planning [
16]. Ecological sustainability emphasizes the appropriate use of renewable and non-renewable natural resources while taking into account the constraints on resource utilization. Economic sustainability encompasses the construction and maintenance of man-made infrastructure (such as roads, railways, and housing) while promoting human rights’ protection, career development, and improved quality of life. The sustainability of social culture emphasizes the development of human resources (including awareness, skills, information, and attitudes) and respects fundamental rights. As the European Commission underscores, it is essential to recognize the diverse dimensions (cultural, material, environmental, human, and social) and values (intrinsic and economic) of cultural heritage [
17]. These indicators are essential for assessing the “productivity” of cultural heritage across its various dimensions and for sustainable tourism development.
Moreover, technology serves as a vital means to accelerate heritage conservation and sustainable tourism development [
6]. Nowadays, virtual experience technologies are increasingly applied in cultural heritage tourism [
18]. Particularly, the outbreak of the pandemic has hastened the advancement of digital tourism [
19]. Virtual tours not only encourage public participation in heritage preservation and transmission [
20], but also significantly contribute to open access and engagement with cultural heritage while supporting Sustainable Development Goals. By breaking down the barriers of time and space, digital technology enables visitors to experience landscapes comprehensively, in detail, and up close at a lower cost. This helps them gain a deeper understanding of the history and knowledge of heritage sites, allowing them to truly appreciate the value of cultural heritage [
21,
22]. Digital open access further facilitates the widespread communication and sharing of cultural heritage, serving as a marketing tool for heritage sites [
23,
24]. This increases visitors’ desire and intention to explore destinations [
25,
26], injecting economic motivation into heritage areas. Despite the significant value of virtual preservation, physical sites remain crucial for their historical, cultural, and environmental significance [
27]. Some scholars express concern that overreliance on digital experiences may diminish attention to physical cultural heritage, while relying solely on digital preservation risks overlooking the importance of physical management and failing to address the practical needs of heritage site conservation [
28]. Therefore, digital technology should be used as a supplementary tool to promote the sustainable development of cultural heritage, rather than as a substitute for physical conservation. Additionally, the public must be educated to understand that digital reproductions serve only as supplements, not substitutes [
18], and to recognize the importance of sustainable practices at heritage sites.
In recent years, there have been significant transformations in the integration of digital technology and cultural heritage. The educational potential of digital cultural heritage has garnered increasing attention. This shift has expanded the possibilities for learning about cultural heritage. Within tourism education, digital technology is recognized for its multifaceted contributions: enhancing knowledge acquisition and engagement [
29], providing educational supplements and stimulating interest [
30], and reducing cognitive overload and facilitating skill development [
31]. Collectively, these studies indicate that digital tourism experiences effectively enhance visitors’ cultural engagement and learning experiences. Furthermore, research reveals that participation in relevant knowledge and cultural activities influences both visitor behavior and post-experience actions. However, previous research has often overlooked the important role that knowledge transfer and participation in cultural activities play in shaping tourists’ perceptions of destinations [
32]. To advance sustainable tourism in cultural heritage regions, enhancing sustainability awareness through education, information dissemination, and incentive activities is essential [
33]. This guides visitors to appreciate the importance of safeguarding heritage values and actively engage in disseminating and promoting these values.
Therefore, this study aims to determine the potential of virtual learning outcomes in cultural heritage to support sustainable tourism (environmental, cultural, and economic) among visitors. Specifically, it links knowledge transfer through digital experiences to the long-term vitality of cultural heritage tourism, emphasizing the impact of digital experiences on behaviors that promote sustainable cultural heritage development including environmental conservation, cultural documentation, and repeat visits. We constructed an integrated model combining the Generic Learning Outcomes and Theory of Planned Behavior, conducting empirical analysis using the digital cultural heritage tourism program “Virtual Tour of the Great Wall,” developed using the Great Wall of China as a prototype. This research addresses the following questions: What is the educational significance of cultural heritage in digital environments? How will post-experience learning outcomes influence visitors’ sustainable tourism practices?
5. Discussion
This study integrates the Generic Learning Outcomes (GLOS) and the Theory of Planned Behavior (TPB). Based on a questionnaire survey of 642 users and PLS-SEM analysis, this study investigates the impact of learning outcomes from digital cultural heritage on tourists’ sustainable tourism practices. The core conclusions are as follows:
First, consistent with previous findings, this study highlights the socio-educational function of digital cultural heritage tourism in disseminating heritage knowledge and enhancing heritage engagement [
30,
84]. However, this study differs in its focus on exploring how learning outcomes across different dimensions influence sustainable tourism at cultural heritage sites. Furthermore, this study expands upon the research scope of Li et al. [
85] and Yan et al. [
64], who utilized generic learning outcomes to focus solely on user acceptance of digital cultural heritage programs. We reveal the intrinsic logic by which digital cultural heritage shapes visitors’ sustainable tourism cognition. Within the proposed model, knowledge and understanding, skills, attitudes and values, enjoyment, inspiration, and creativity, as well as activity, behavior, and progression, all positively influence visitors’ sustainable tourism attitude and perceived behavioral control. The learning outcomes across these dimensions enhance visitors’ tourism awareness, making them more willing to engage in deeper exploration and investment in cultural heritage sites. Notably, the shaping of attitudes and values exerts the most pronounced influence on visitors’ perceived behavioral control, aligning with the findings of Zheng et al. [
48]. Meanwhile, activity, behavior, and progression demonstrate the strongest driving effect on sustainable tourism attitude, corroborating Falk et al.’s [
46] assertion that informal learning can alter individual behavioral attitudes. This indicates that digital cultural heritage experiences not only convey knowledge but also profoundly transform visitors’ behavioral cognition and value orientations. Tourists form deep connections with cultural heritage when they gain insights into its historical context or immerse themselves in experiential activities. This fosters a greater willingness to devote more time and energy to actively participating in the dissemination, preservation, and innovation of cultural heritage [
86]. As many tourists with previous Great Wall travel experiences indicated in test feedback, this virtual experience encourages them to revisit the Great Wall and pursue more in-depth “series tours” and “expert tours” of the site.
Second, the core decision variables within the Theory of Planned Behaviour (TPB) are crucial in mediating the relationship between learning outcomes in digital cultural heritage and intention to engage in sustainable tourism. Visitors’ attitudes toward sustainable tourism, social norm, and perceived behavioral control collectively determine the strength of their sustainable tourism intention. Moreover, perceived behavioral control and subjective norm indirectly influence intention by affecting attitudes, consistent with the original theoretical foundation of the TPB [
57] and aligning with the empirical evidence from Li et al. [
87] and Joo et al. [
56]. This finding confirms that learning outcomes from digital cultural heritage do not directly translate into sustainable tourism intention. Instead, they gradually guide visitors toward sustainable tourism willingness by reshaping their behavioral attitudes, social cognition, and self-efficacy. This validates the transmission logic between knowledge transfer and behavioral intention.
Finally, sustainable tourism intention serves as a key predictor of actual sustainable tourism practices among visitors, though the conversion between the two is constrained by cost perception. The stronger a visitor’s sustainable tourism intention, the higher the likelihood of implementing related practices. While self-reported data cannot fully replace objective behavioral observation, the significant correlations between learning outcomes and these psychological variables authentically reflect the substantial influence of digital cultural heritage’s educational function in shaping tourists’ sustainable tourism cognition. This cognition will guide visitors to adjust behavioral tendencies and practice sustainable tourism concepts in actual travel scenarios. Moreover, the moderating effect of cost perception reveals a critical boundary condition for translating intention into action, aligning with Davison et al.’s [
88] finding that fluctuations in travel costs significantly influence tourists’ travel decisions. When visitors perceive that adopting sustainable tourism requires greater time, effort, or monetary costs, the efficiency of converting intention into practice significantly diminishes. This provides a basis for understanding the implementation challenges in visitors’ sustainable tourism behaviors.
5.1. Theoretical Significance
First, traditional GLOs are primarily used to evaluate learning outcomes in offline cultural settings. This study integrates them with sustainable tourism behavior, emphasizing educational significance such as skill transfer and value internalization within digital tourism contexts. Second, aligning with digital-age characteristics, this research incorporates online social media information into the subjective norm construct, empirically demonstrating its significant impact on tourists’ sustainable tourism attitudes and intentions. This expands the implications of social influence factors in tourism research. Third, this study introduces cost perception as a moderating variable, revealing how non-volitional factors (implicit costs) constrain the conversion of intentions into practice. This addresses the traditional TPB theory’s limitation in insufficiently accounting for practical barriers during behavioral implementation. Fourth, while existing research often separately examines the educational value of cultural heritage or the factors influencing tourism sustainability, the interrelated mechanisms between these two areas lack systematic investigation. This study clarifies how learning outcomes from digital cultural heritage influence tourists’ behavioral decision variables, ultimately shaping sustainable tourism practices. The integrated model demonstrates strong fit and predictive efficacy, holding potential for application across similar research. It also provides methodological insights for interdisciplinary studies spanning heritage studies, tourism management, and education.
5.2. Practical Significance
This study confirms that digital cultural heritage experiences hold significant socio-educational value and can serve as a key driver for promoting the sustainable development of cultural tourism. We emphasize that the development of related digital tourism programs must transcend entertainment-oriented positioning and shift toward more educational objectives. This study clarifies that projects should incorporate multidimensional learning modules encompassing knowledge transfer, skill cultivation, and value formation to ensure the educational function of digital cultural heritage is effectively realized. While an overemphasis on educational content may diminish learner engagement, an excessive focus on entertainment design may reduce the appeal of learning materials [
89,
90,
91]. Therefore, digital cultural heritage experience programs should prioritize the development of participants’ knowledge and skills, laying a more comprehensive foundation for subsequent travel. By conveying the historical, architectural, technical, aesthetic, and ecological contexts of cultural heritage, along with the impacts of multiple risks such as climate change, human activities, and natural disasters on heritage sites, visitors gain an experiential understanding of the intrinsic connection between sustainable tourism and heritage preservation. The presentation of significant heritage can also enhance visitors’ national pride, fostering voluntary protection, exploration, and engagement with cultural heritage by shaping values. The generation of inspiration and creativity, along with the promotion of subsequent behavioral activities, will influence visitors’ deepening passion for cultural heritage and their long-term engagement. These design directions offer guidance for balancing education and entertainment in digital experiences.
Additionally, cultural heritage sites must address the core issue of cost perception constraining behavioral change. For cost optimization, three key areas should be prioritized: enhancing low-carbon transportation, integrating cultural experience resources, and introducing sustainable behavior incentive policies (such as ticket discounts and creative cultural benefits). These measures aim to reduce the time, effort, and financial costs for visitors participating in sustainable tourism. In terms of social influence, disseminating expert insights and case studies of sustainable practices among tourists through online social media can strengthen the guiding role of social norm in shaping visitor behavior. This approach promotes the evolution of sustainable tourism from individual choices to collective consensus and voluntary action. Simultaneously, encouraging user-generated content and participatory discussions empowers visitors as active contributors to heritage preservation and narrative development. This approach is in line with the cultural aspect of sustainable development, which highlights participation, identity, and the long-term well-being of the community [
9]. These measures will drive the coordinated development of cultural heritage preservation, tourism economic growth, and social-cultural transmission. This will contribute to achieving the United Nations’ 2030 Agenda for Sustainable Development goals relating to cultural heritage conservation and sustainable tourism.
5.3. Limitations and Prospects
This study also has certain limitations. First, since the “Virtual Tour of the Great Wall” is currently a mini program on WeChat, it only provides a Chinese interface and Chinese voice narration. As a result, 99% of users are Chinese. Additionally, due to the Great Wall’s high profile, foreign tourists’ intention and behavior to visit the Great Wall are primarily driven by its reputation rather than the use of this program. Therefore, this study only conducted research in China. Second, the theoretical model is only constructed based on GLOS and TPB. Although these two theories provide a solid framework, other theoretical models may exist that could enrich our research perspectives. Future studies may consider incorporating a more diversified theoretical foundation to more comprehensively explain and predict visitor behavior and learning outcomes in cultural heritage tourism. Third, this study relies on self-reported data from participants rather than objective observations of actual behavior. Self-assessment data may be influenced by factors such as social desirability bias. Therefore, future research could integrate objective behavioral observation data to further validate the models and conclusions presented herein. Finally, further research could explore how the presentation formats and educational content of various forms of digital cultural heritage impact visitor learning outcomes and the sustainable development of other types of heritage.