1. Introduction
The interest in protecting the natural environment from the destructive use of its resources has increased considerably over the years due to the worsening quality of life in urban centres and heavily urbanised or polluted areas. In this context of ecological awareness, natural parks have become the focus of particular attention. Nevertheless, their management must take into account the problem of protecting the natural and environmental resources together with the social, economic, and cultural development of the resident population.
In the United States, at the beginning of the 19th century, a movement of interest arose for a better administration and management of natural resources, which led to the creation in 1872 of the first park of modern conception, Yellowstone Park.
Through the CPNAP (Commission on National Parks and Protected Areas), the IUCN (International Union for Conservation of Nature), an international nongovernmental organisation specialising in nature conservation issues), drew up a document that defines what a protected area is:
“A clearly defined, recognised, dedicated and managed geographical space, through legal or other effective means, to achieve the long-term conservation of nature with associated ecosystem services and cultural values”.
Protected areas are divided into various categories. National parks, when officially recognised by the government, fall into one of the IUCN categories and consist of large natural sites dedicated to the protection of ecological and biological systems and species. Visitors’ access to parks is permitted for inspirational, educational, cultural, and recreational purposes so as not to cause significant environmental damage.
Geoparks are natural parks characterized by the presence of geological features of interest [
2,
3,
4]. The management, preservation, and enhancement of the parks’ geological heritages follow the guidelines of the IUCN. With reference to this category, it is worth mentioning that many places of tourist attraction often have an important geological basis. In Italy, for example, the Cinque Terre, the Amalfi Coast, and the tuff villages in the Tuscia (northern Latium) can be mentioned. These are places where human activity has historically been able to adapt to the environment, achieving a balance based on the geomorphology of the territory and local stone types used for the construction of inhabited centres.
A park is thus a protected area recognised, regulated, and managed by an administration where, according to the IUCN, some activities are permitted, i.e., those existing de facto, those necessary for the management of the protected territory or those necessary for the balanced development of tourism, and recreational activities, in the area.
On the contrary, other human activities are to be excluded because they are incompatible with the collective public interest and purpose of conserving and enhancing the environmental asset. Unfortunately, the emergence of these parks, their official international recognition together with the increasing possibility of travelling, and the ease of the dissemination of news have favoured the emergence of new mass tourism. Tourists are attracted by the idea of an ecological and high-level holiday (i.e., UNESCO Geoparks) or even by the curiosity of visiting places that have been the sets of famous films.
This evolution from places for the few to places of mass tourism required a change in the management of the parks with interventions aimed to secure the sites and visiting routes. This, in many cases, resulted in the loss of the charm of the visit for those who wished to enjoy the sites in silence and contemplation. Road infrastructures and reception areas, necessarily built to avoid do-it-yourself attempts by visitors, try to blend in with the surroundings, inevitably altering their appearance and perception, and, in some cases, creating damage [
5]. Moreover, economic objectives sometimes prevailed over social and ecological ones that led to the birth of the park [
6].
The sustainability of park management has been investigated in numerous studies showing the conflicting tendency between tourism development and ecological protection, i.e., [
7,
8,
9,
10], and attempted to find solutions [
11]. There is therefore a clear need for proper management of the tourist flow and an Environmental Impact Assessment (EIA) following this flow [
12,
13,
14,
15,
16].
Some of the problems addressed concern how to handle the complexity of the territories, generate socioeconomic benefits for local populations, and resolve conflicts with local actors, a prerequisite for sustainable management [
17,
18].
As for the problem of overtourism and seasonal variations in tourism demand, possible mitigation has been envisaged by establishing different seasonal entrance fees capable of supporting demand during undertourism and generating a higher level of revenue for the park’s economic equilibrium [
19]. The problem was also addressed by using social big data that can help managers to establish spatially explicit management policies that consider tourism pressures on individual protected areas [
20] and SWOT analysis in the case of an Iranian park [
21]. Still, in the context of mitigating the excessive number of tourists, transport services are being considered (including soft mobility and transport infrastructures [
22]). Barrena Ruiz et al. [
23] instead examined mobility within parks with the need to establish fixed-boundary conservation enclosures.
Another technology proposed for balancing the economic and environmental benefits of parks is three-dimensional sensor image acquisition in order to monitor tourists in the reserve and the collection of natural environment data. According to the collected data, it is possible to envisage an environment capacity assessment and pricing plan [
24].
The examination of the motivations that drive tourists to visit parks and how these can be governed for sustainable fruition [
25,
26] is also of interest. On the other side, Xu and Fox [
27] explored how different cultural contexts, namely from China and the UK, influence the attitude of a person visiting national parks. Other authors, in light of the increasing number of extreme weather events, have dealt with the revision of land use planning, retrofitting, and redesigning of some of the national park facilities and infrastructures to ensure climate resilience and sustainable tourism [
28].
With regard to geoparks, many authors have pointed out that the transition to a UNESCO geopark can only take place with the involvement of local administrations and stakeholders [
29,
30,
31,
32]. Even in UNESCO geoparks, there is a strong conflict of interest between economic benefits and the preservation of the natural environment [
33,
34], and efforts are being made try to understand how the parameters of sustainability and quality required by the UNESCO network in terms of ecosystem protection and conservation can actually be measured [
35,
36].
Overall, a review of the existing literature indicates that in most cases where a park has been established, there has been a negative impact on the environment due to the increase in visitor numbers without adequate planning for their management. On the other hand, the presence of a park has certainly prevented land use that would have led to the destruction of existing natural heritage, and this is a positive aspect.
A recent trip to China made by the authors created awareness that the tourist development of parks and sites of geological interest has gained unexpected dimensions. This has engendered real bafflement.
Young Ng [
37], as part of the Global Eco Asia–Pacific Conference held in Adelaide on 27–29 November 2017, examined the economic impact generated by tourism from the only category of geoparks in China. From the year 2000 to 2017 there was a total of 1.42 billion visitors with an annual increase of 5–7%. This has allowed the creation of jobs and business opportunities: enterprises in the field of infrastructure construction, the transport sector, catering, hospitality, manufacturing and production of souvenirs and local foods, museum design, and organization of events. Travel agencies were born and the presence of naturalistic guides, environmental guards, and conservation professionals (geologists, biologists, ecologists, etc.) was necessary.
The following numbers give an idea of the economic activity that was born: there are 23,000 hotels and agritourism centres, 20,500 directors and administrative staff, and 464,000 front-line personnel. As a result, 2.6 million jobs have been created. The income generated since the year 2000 is 90 billion dollars. On average, each geopark had an annual income of $26 million with the creation of 15,000 jobs, considering the related industries.
The business revolving around these parks is significant and is also very similar on other continents.
In the United States, the market behind natural park tourism has been estimated to be around 940 million dollars in 2022. As for Europe, since the prevailing policy is that of free access (i.e., not charging entrance fees to parks), it is not possible to monitor the number of visitors and, consequently, to correctly quantify the economic impact of this type of tourism [
38].
In the following, some examples of parks in China, the United States, and Europe will be examined with a focus on the infrastructures that are present and necessary for receiving tourists. Indeed, this aspect has been little investigated in the literature reviewed. As regards to the criterion for choosing the parks under this study, we compared parks in sparsely populated territories far from urbanised areas, such as in the United States and China, with European parks located in territories close to major communication networks and sometimes even the site of productive settlements, such as mining activities. This work is not meant to be an economic, urban planning, or social analysis but rather, considerations and questions arising from a particular sensitivity of persons who deal with cultural heritage, including landscape and natural heritage, regarding the real coexistence between park tourism and the very essence for which the parks were established.
3. United States of America Parks
In the United States, the National Park System comprises 423 national park sites and covers over 84 million acres, with parks in every state and territory, including Puerto Rico, the Virgin Islands, American Samoa, and Guam. Within the system, there are 63 sites officially designated by Congress as “National Parks” (the Grand Canyon, Yellowstone, Redwood, etc.), i.e., protected areas managed by the National Park Service.
The following parks are described below, located in the American territory, as shown in
Figure 9: Death Valley, Monument valley, Canyonland, and Yellowstone.
3.1. Monument Valley Navajo Tribal Park
Monument Valley is a Navajo Nation tribal park, straddling the border of northeastern Arizona and southeastern Utah of the Colorado Plateau. It preserves the Navajo way of life and some of the most striking and recognizable landscapes of sandstone buttes, mesas, and spires in the entire Southwest of the United States.
The area is entirely within the Navajo Indian Reservation near the small Indian town of Goulding, established in 1923 as a trading post, and now has a comprehensive range of visitor services. The landscape is characterized by an alternating series of high east-facing escarpments and wide west-facing plateaus, dissected by the deep canyons of the San Juan and Colorado Rivers and their tributaries. The elevation above sea level of most of the area averages 1500 m. The sedimentary formations range in age from Upper Carboniferous to Quaternary.
The oldest formation is found in the deep, narrow canyon of the San Juan River in the eastern part of the area, while progressively younger formations are exposed to the west in a succession of steep slopes, cliffs, and broad banks. Most of the formations are of continental origins, such as the Cedar Mesa and De Chelly sandstones of the Cutler Formations and the Wingate, Navajo and Entrada sandstones. Volcanic hills and basic igneous rock dykes of Tertiary age are present like in the Alhambra Rock, a jagged spire of igneous rock that, due to its black colour, contrasts strikingly with the red rocks of the surrounding country [
48].
Visitor Centre, Accommodation, and Services
The main visitor centre is one mile east of US Highway 163 on the Arizona–Utah border. This centre has a big gift shop as well as various exhibits of the Navajo Nation, Navajo Code Talkers, and the area’s history. There is also a full-service restaurant for breakfast, lunch, and dinner outside the park in Goulding. As for accommodations, there is a luxury hotel inside the park, and other lodging is available near the entrance to the park. Another possible place to stay is at the campgrounds. The visitors’ centre, although built in such colours as to merge into its surroundings, is equipped with some leisure facilities and an athletics/football field, the need for which is not understood, considering that this is a place that should inspire quiet contemplation (
Figure 10 and
Figure 11).
The campgrounds, on the other hand, represent a way of experiencing the park closer to its essence, but of course, can be uncomfortable and therefore not usable by the elderly and people with disabilities.
3.2. Canyonlands National Park (Utah)
Canyonlands National Park is in southeastern Utah near the town of Moab. The park preserves a colourful landscape eroded into numerous canyons, mesas, and buttes by the Colorado River, the Green River, and their respective tributaries. Canyonlands is Utah’s largest national park with 1366 Km2 of land and water. The Green and Colorado Rivers split the park into three major districts: Island in the Sky, The Needles, and The Maze.
Island in the Sky, located in the north of the park, is about 40 min from Moab. The Needles district is in the southeast corner of Canyonlands, about 90 min from Moab or an hour from Monticello. The Maze district, located in the west of the park, is the most remote and challenging.
There are no roads within the park that cross the rivers to directly link any of Canyonlands’ districts. Travelling between them requires two to six hours by high-clearance 4WD.
For hundreds of millions of years, material from a variety of sources was deposited forming sedimentary rocks. Until about 15 million years ago, most of the canyon area was close to sea level. Local uplifts and volcanic activity created features such as the Waterpocket Fold at Capitol Reef and the La Sal Mountains near Moab, but then movements of the Earth’s crust raised the entire area. Today, the average elevation is 1500 m above sea level. The uplift of this region, known as the Colorado Plateau, marked the transition from a depositional to an erosional environment. The Colorado and Green Rivers began to descend and are now embedded in canyons over 600 m deep. Sediment-laden stormwater runs off into these rivers, transforming the surrounding landscape into a network of tributary canyons, culverts, and washes. A particular factor in shaping Canyonlands is the Paradox Formation, a layer of evaporite from the Upper Carboniferous. Buried deep within, the salts in this layer can liquefy under the weight of the overlying rock, flowing like toothpaste away from the source of greatest load. In response, the upper layers may rise, creating salt domes, or erode and collapse, creating salt valleys. This phenomenon is particularly visible in The Needles.
Visitor Centre, Accommodation, and Services
Each district of the park has its visitor centre or ranger station. Canyonlands is a remote area with few services. There is no food, lodging, or gas available in Canyonlands National Park.
There are campgrounds at Island in the Sky and The Needles. Island in the Sky Campground (Willow Flat) has 12 sites, first come, first served. The campground is open year-round. There are toilets, picnic tables, and fire rings at the campgrounds; there is no water. It is possible to get drinking water outside the visitor centre spring through fall. Sites fill quickly from spring through fall.
The Needles Campground has 26 individual sites plus 3 group sites in different locations around, with the possibility of reservation spring through fall. At other times of the year, individual sites are first come, first served. It is also possible to reserve group sites for nights between mid-March and mid-November. There are toilets, picnic tables, and fire rings.
Visitor centres are integrated into the landscape (apart from the roads) and are essential in the reception services (
Figure 12 and
Figure 13a). This park in its reception has favoured campgrounds instead of luxury hotels (
Figure 13b).
Campgrounds are a sustainable solution from both a landscape and ecological point of view. They are integrated with the surrounding environment and enable guests to fully enjoy the landscape with a minimum of essential services and without leisure facilities (tennis courts, basketball courts, bars, etc.) whose presence is inappropriate.
3.3. Death Valley National Park (California/Nevada)
Death Valley is in southeastern California and, with 13,800 km2, is the largest national park in the United States outside Alaska. Death Valley is approximately 225 km long and 8 to 24 km wide. The valley is a graben bounded to the west by the Panamint Range and to the east by the Black, Funeral, and Grapevine mountains of the Amargosa Range. The present landscape was shaped between 35 million and 5 million years ago during the Cenozoic Era with the formation of the present graben filled by an enormous number of debris eroded from the surrounding mountains which range in thickness between 2500–3000 m. During the Ice Ages, Death Valley was periodically filled by large lakes. Their waves carved terraces out of the surrounding rocks, and their evaporation left alternating layers of mud and salt deposits that cover the present floor of the basin.
Visitor Centre, Accommodation, and Services
Almost 1600 km of paved and dirt roads provide access to both popular and remote locations. However, 93% of the park is protected by an officially designated wilderness reserve.
Furnace Creek Visitor Centre is the central hub for visiting Death Valley (
Figure 14).
Here, there is a little airport without scheduled commercial flights, and it is possible to pay the park entrance fee, speak with a ranger about trip plans or questions, watch the 20 min park film, explore museum displays, and browse the park bookstore.
Driving distances between sightseeing and lodging can be long in the park. When picking a place to sleep, visitors should consider the location of the lodging and what parts of the park they want to visit. In the park, luxury accommodations are available.
Campsites are limited to no more than eight people and two vehicles. Larger groups wishing to camp together can reserve group sites at the Furnace Creek Campground.
As in the case of Monument Valley, luxury accommodation with leisure facilities such as tennis courts and swimming pools has been favoured in Death Valley Park (
Figure 14 and
Figure 15). Luxury tourism is thus favoured, which is obviously for those who want to have privileged treatment. Staying in these places is a means of affirming one’s social status rather than a way to get to know and appreciate landscapes and nature. Moreover, this luxury accommodation certainly results in high consumption of resources (water, electricity, etc.).
3.4. Yellowstone National Park (Wyoming/Montana/Idaho)
Yellowstone National Park, founded on 1 March 1872 by President Ulysses S. Grant, is the oldest national park in the world and covers 8983.18 km². It has been a UNESCO World Heritage Site since 1978 and straddles three states, northwestern Wyoming (for the most part), southeastern Idaho, and southwestern Montana. The park is known for its diverse wildlife and numerous geothermal manifestations.
Violent geological forces have created Yellowstone National Park’s physical landscape. Here, active volcanic systems and geothermal phenomena make this national park a priceless treasure. In fact, Yellowstone was established as the world’s first national park primarily because of its extraordinary geysers, hot springs, mud pots and steam vents, and other wonders such as the Grand Canyon of the Yellowstone River.
Until the end of the Mesozoic, the Yellowstone terrain was a combination of shallow oceans, sand dunes, and extensive plains. Starting about 30 million years ago, the plates of western North America began to separate from Europe. As the movement of the plates accelerated about 17 million years ago, volcanic activity at the hot spot also increased. As the Earth’s crust passed over this magma chamber, dozens of volcanic eruptions occurred. The plate moved in a south–west direction, leaving a landscape marked by more than 100 volcanic calderas created during the 800 km journey to present-day Yellowstone. Then, about 2.1 million years ago, the first massive eruption occurred that devastated present-day Yellowstone. The last big eruption occurred about 640,000 years ago, leaving behind an enormous caldera measuring roughly 50 by 70 km. The last-known lava flowed in Yellowstone about 70,000 years ago.
Visitor Centres, Accommodation, and Services
Many visitor centres are present in the park like Old Faithful Visitor and Education Centre, Fishing Bridge, Grant Visitor Centre, West Yellowstone, and Canyon Visitor Education Centre. Accommodations are provided by nine lodges, twelve campsites, and hundreds of backcountry campsites. Moreover, restaurants and cafes can be found near the lodges as well as general shops for those who wish to purchase groceries or snacks. In addition, there are 52 picnic areas scattered throughout the park.
Yellowstone is the oldest park in the world and is rich in naturalistic, geological, and geothermal features that are not only of scientific interest but are undoubtedly spectacular. This resulted in the development of many visitor centres, visitor facilities, and infrastructures for mobility and parking (
Figure 16a,b).
The impact on the environment has been important since these infrastructures have often not integrated with the natural landscape. As justification, it can be assumed that it was a necessary ‘damage’ to avoid greater ‘damage’ due to DIY solutions by tourists.
5. Discussion
The business revolving around natural parks has been growing remarkably in recent decades in China, the United States, and Europe. Nevertheless, together with the economic benefits, serious shortcomings in the planning of the construction of reception facilities and road infrastructures (required for this new type of tourism) are highlighted because of damages to the natural environment and the landscape.
The analyses carried out on a few Chinese, American, and European cases highlight a different approach to tourist reception in the old continent. This situation is essentially linked to the fact that European parks, compared to the American and Chinese ones, are generally smaller in size and located in places less than two hours away by car from major cities. Furthermore, European parks are located in inhabited areas that are interested in economic activities, such as agriculture, animal farming, or past activities, related to the exploitation of geomineral resources. Thanks to this, the European parks have not undergone major interventions to increase the road network and reception facilities, but the administrations have made every effort to promote the use of public transport and the internal network of ancient paths to visit the parks from the reception centres and also to encourage the dispersal of the flow of tourists in small towns. Moreover, in Europe, tourism related to natural parks is not comparable in terms of the number of visitors with that of the US and China.
In China, the flow of tourists is concentrated during the high season, resulting in crowding. This large flow of tourists not only puts pressure on reception but also destroys the original ecological environment. The need to build infrastructure, roads, fences, etc. is therefore essential for the protection of the geological heritage and the environment. Nevertheless, natural parks with fragile ecological conditions and limited tourism capacities find it more difficult to build and maintain the necessary infrastructures to support the flux of tourists that causes crowding in the high season. Imposing a limit on the number of tourists could be beneficial for the protection of the park.
The Huangshan Geopark adjusts its tourist threshold according to weather conditions, and when the maximum limit is reached, the system either stops selling tickets or encourages visitors who have purchased tickets to visit the park the next day. Unfortunately for some parks, the income from tourism seems to be the sole purpose of the park’s existence, neglecting the protection and conservation of the natural heritage [
5,
42,
51].
Even in the United States, with an estimated turnover in 2022 of USD 940 million, nature parks are a considerable source of revenue. Therefore, the question arises as to whether economic profit bypasses the protection of the wilderness or whether it is precisely for the protection of the sites that solutions not “environmentally sustainable” are sometimes accepted. In this regard, it is interesting the sentence written about Yellowstone Park on the official national park system:
“Some alterations to the landscape, such as the construction of roads and other structures, are generally accepted as necessary to meet the needs of today’s visitors”.
Therefore, there is an awareness of the environmental impact of some visitor infrastructures (tourist facilities themselves, roads, employee accommodation, car parks, service areas, and waste disposal), but there is probably also a lack of planning and building regulations [
53].
Thus, in many American destinations, accommodation facilities have developed along coastlines, valleys, and scenic roads consisting of large resorts of heterogeneous design that are out of place with the natural environment and clash with the indigenous structural design [
54]. One wonders, however, what sense there is in building tennis and athletics courts and swimming pools, and how their construction was authorised in these places where one should go to contemplate and experience.
In light of what has occurred, the question is about the cost/benefit ratio with respect to the initial motivation of protecting the natural environment that led to the creation of these parks. Should tourism be banned in these areas? Which actions can be taken? Certainly, there are some situations that cannot be changed due to a general system, e.g., holidays are concentrated for most of the countries in the same period and to the geographic position (i.e., some parks cannot be visited in winter for the severe climatic conditions).
In cities of art, an attempt is made to propose alternative routes and itineraries to the usual ones in order to avoid an excess of tourists, especially in small cities of medieval origin. Likewise, for small parks located in places difficult to reach and at risk to collapse during the peak flow period, solutions should be found for sustainable fruition.
Is it acceptable for those who base their new economy on the existence of a natural park to give up part of their income? Which commission should oversee the quality of the park?
As a matter of fact, the problem is not tourism itself but the capability of the management of the parks, whose mission should first be the protection of the sites and to govern the great number of tourists. Taking into account this difficulty and the consequent risk of lack of protection, the coexistence of tourism infrastructure and places of natural value is a difficult task and really problematic.
It is desirable to implement strategies and actions that teach tourists to respect the park by trying to stimulate a sense of belonging to the natural environment.
The damages that have been done by the construction of many incongruous infrastructures remain (unless they are destroyed), but future choices must be directed to make park management fully sustainable in all aspects. For this purpose, it would be sufficient to apply the IUCN principles. In 1993, the Europarc Federation published the ground-breaking report “Loving them to death”, which called for sustainable tourism in Europe’s protected areas. Furthermore, in 1995, the Europarc Federation took the initiative to establish the European Charter for Sustainable Tourism in Protected Areas.
This charter is a practical management tool in which the central element is the collaboration among all the stakeholders to develop a common sustainable tourism strategy and action plan based on a thorough analysis of the situation. The objective of all Charter projects and activities is the protection of the natural and cultural heritage together with an improvement of tourism. Parks that complete the Charter process ensure that effective and suitable management allows a sustainable and cost-effective enjoyment of parks! But how many parks meet the demands of the charter? Is this charter used?
Tourism, on the other hand, can directly contribute to the conservation of sensitive areas and habitats through the revenue from park entrance fees. These funds can be used for general conservation programmes and activities, such as park ranger salaries and park maintenance.
Planning tourism development and thus the tourism-related facilities (particularly accommodations) could prevent harmful and costly mistakes such as the gradual deterioration of the environmental assets [
42,
55].
6. Conclusions
The big business revolving around parks has been growing in recent decades in China, the United States, and Europe. However, while this has brought economic benefits, it has also highlighted shortcomings in the planning of reception facilities and road infrastructure needed for this new type of tourism, causing damage to the natural environment and the landscape. The American and Chinese reception models resemble each other in terms of similar park characteristics, size, and location. The European ones seem more virtuous because their location is more favourable to the use of existing structures for both accommodation and travel.
Regarding the title of this article “Can tourism and natural parks coexist?”, this coexistence is a hard challenge. In fact, when man arrives in a new environment, he inevitably changes it and even more in the presence of large numbers of people. What can be done is to limit the damage by governing the number of visitors (i.e., promoting visits to the parks in low season and diversifying the tourist offer also towards less attractive or well-known places), reduce the infrastructure and visitor centres, promote the use of local transport, and educate tourists to respect the nature and the rules of the park.
In this sense, the European parks have an advantage with respect to American and Chinese parks because they were established in territories where man had already modified the environment with settlements and economic activities mainly in balance with the environment itself. Nevertheless, the greatest wish would be to return the charm of discovering places in meditation and silence, emotions that have unfortunately been completely lost with this type of tourism. However, perhaps that is the price that has to be paid for the preservation of places!
This research opens the way for further investigation, particularly in the context of European parks, in order to study the relationship between the traditional buildings present in the parks and the natural resources/raw materials that characterise them, all aimed at enhancing them for visitors who will thus be able to understand how each territory and human presence have interacted in shaping the landscape.