Geotourism deals with non-living parts of the natural and built environments. “Looking at the environment in a simplistic manner, we see that it is made up of Abiotic, Biotic and Cultural(ABC) attributes. Starting with the ‘C’ or cultural component first, we note that of three features it is this one which is generally the most known and interpreted, that is, through information about the built or cultural environment either in the past (historical accounts) or present (community customs and culture).The ‘B’ or biotic features of fauna (animals) and flora (plants) has seen a large focus of interpretation and understanding through ecotourism. But it is the first attribute of the ‘A’ or abiotic features including rocks, landforms and processes that has received the least attention in tourism, and consequently is the least known and understood.This then is the real power of geotourism, in that it puts the tourist spotlight firmly on geology, and brings it to the forefront of our understanding through tourism". Geotourism was first defined (Hose, 1995) in England. But, there are two viewpoints of geotourism:
1. The geological and geomorphological. It is mainly followed in the world, and 2. The geographical. It is followed in the United States of America (USA) where the emphasis is on the geographical sense of a place in general.
So, the latter, National Geographic 's Geo-tourism(NGG-tourism program) is "best practice" tourism that sustains, or even enhances, the geographical character of a place, such as its culture, environment, heritage, and the well-being of its residents.
The concept of Geographical sustainable tourism with coining the word Geo-tourism, was introduced publicly just in the USA in a 2002 report by the Travel Industry Association of America (as of 2009 this organization adapted name to U.S. Travel Association) and National Geographic Traveler magazine. National Geographic senior editor Jonathan B. Tourtellot and his wife, Sally Bensusen, coined the term in 1997 in response to requests for a term and concept more encompassing than ecotourism and sustainable tourism.
National Geographic 's Geo-tourism program incorporates sustainability principles, but in addition to the do-no-harm ethic focuses on the place as a whole. The idea of enhancement allows for development based on character of place, rather than standardized international branding, and generic architecture, food, and so on.
Missouri State University's Bachelor of Science in Geography features a concentration in Geotourism--the first degree of its kind in the Western Hemisphere, and is one of only three such degrees offered worldwide. Missouri State’s Geotourism degree is the first to be associated with a department of geography.
Lake Tahoe's 1960's tourism brand presents a daunting challenge to becoming a geotourism destination. However some organizations are adopting the strategy and have made significant headway with action campaigns. One, Sustainable Tahoe, provides a tangible demonstration of how geotourism can create long term economic prosperity, that includes water clarity: Sierra Nevada College in Incline Village NV (North Lake Tahoe) now offers a Geotourism class as part of their Interdisciplinary Studies.
The Geotourism Definitions 
Top Definitions From the point of view of the Tourism of Geology and Abiotic Nature Based Tourism includes:
- “…part of the tourist’s activity in which they have the geological patrimony as their main attraction. Their objective is to search for the protected patrimony through the conservation of their resources and of the tourist’s Environmental Awareness. For that, the use of the interpretation of the patrimony makes it accessible to the lay public, promoting its popularization and the development of the Earth sciences” .
- “Geotourism is a knowledge -based tourism, an interdisciplinary integration of the tourism industry with conservation and interpretation of abiotic nature attributes, besides considering related cultural issues, within the geosites for the general public” .
- "A form of natural area tourism that specifically focuses on landscape and geology. It promotes tourism to geosites and the conservation of geo-diversity and an understanding of Earth sciences through appreciation and learning. This is achieved through independent visits to geological features, use of geo-trails and view points, guided tours, geo-activities and patronage of geosite visitor centers".
- “The provision of interpretative and service facilities for geosites and geomorphosites and their encompassing topography, together with their associated in-situ and ex-situ artefacts, to constituency-build for their conservation by generating appreciation, learning and research by and for current and future generations” .
Also,"Geosites" generally involve geomorphological sites (or geomorphosites) and geological sites such as petrological, volcanological, ... sites.
The National Geographic Society defines geotourism as tourism that sustains or enhances the geographical character of a place – its environment, culture, aesthetics, heritage, and the well-being of its residents.
- Integrity of place: Enhance geographical character by developing and improving it in ways distinctive to the local, reflective of its natural and cultural heritage, so as to encourage market differentiation and cultural pride.
- International codes: Adhere to the principles embodied in the World Tourism Organization’s Global Code of Ethics for Tourism and the Principles of the Cultural Tourism Charter established by the International Council on Monuments and Sites (ICOMOS).
- Market selectivity: Encourage growth in tourism market segments most likely to appreciate, respect, and disseminate information about the distinctive assets of the locale.
- Market diversity: Encourage a full range of appropriate food and lodging facilities, so as to appeal to the entire demographic spectrum of the geotourism market and so maximize economic resiliency over both the short and long term.
- Tourist satisfaction: Ensure that satisfied, excited geotourists bring new vacation stories home and encourage friends to experience the same thing, thus providing continuing demand for the destination.
- Community involvement: Base tourism on community resources to the extent possible, encouraging local small businesses and civic groups to build partnerships to promote and provide a distinctive, honest visitor experience and market their locales effectively. Help businesses develop approaches to tourism that build on the area’s nature, history and culture, including food and drink, artisanry, performance arts, etc.
- Community benefit: Encourage micro- to medium-size enterprises and tourism business strategies that emphasize economic and social benefits to involved communities, especially poverty alleviation, with clear communication of the destination stewardship policies required to maintain those benefits.
- Protection and enhancement of destination appeal: Encourage businesses to sustain natural habitats, heritage sites, aesthetic appeal, and local culture. Prevent degradation by keeping volumes of tourists within maximum acceptable limits. Seek business models that can operate profitably within those limits. Use persuasion, incentives, and legal enforcement as needed.
- Land use: Anticipate development pressures and apply techniques to prevent undesired overdevelopment and degradation. Contain resort and vacation-home sprawl, especially on coasts and islands, so as to retain a diversity of natural and scenic environments and ensure continued resident access to waterfronts. Encourage major self-contained tourism attractions, such as large-scale theme parks and convention centers unrelated to character of place, to be sited in needier locations with no significant ecological, scenic, or cultural assets.
- Conservation of resources: Encourage businesses to minimize water pollution, solid waste, energy consumption, water usage, landscaping chemicals, and overly bright nighttime lighting. Advertise these measures in a way that attracts the large, environmentally sympathetic tourist market.
- Planning: Recognize and respect immediate economic needs without sacrificing long-term character and the geotourism potential of the destination. Where tourism attracts in-migration of workers, develop new communities that themselves constitute a destination enhancement. Strive to diversify the economy and limit population influx to sustainable levels. Adopt public strategies for mitigating practices that are incompatible with geotourism and damaging to the image of the destination.
- Interactive interpretation: Engage both visitors and hosts in learning about the place. Encourage residents to promote the natural and cultural heritage of their communities so tourists gain a richer experience and residents develop pride in their locales.
- Evaluation: Establish an evaluation process to be conducted on a regular basis by an independent panel representing all stakeholder interests, and publicize evaluation results.
See also 
- Sadry, B.N (2009)" Fundamentals of Geotourism: with a special emphasis on Iran", Samt Organization publishers, Tehran.220p. (English Summary available Online at: http://physio-geo.revues.org/3159?file=1
- Newsome,D. and Dowling, R.K. (2010) Geotourism: The Tourism of Geology and Landscape, Oxford: Goodfellow Publishers
- Hose, T. A. (2012), “ 3G’s for Modern Geotourism ”, Geoheritage Journal, 4: 7-24
- Geotourism in Vermont's Northeast Kingdom | National Geographic Geotourism Destinations and Sustainable Travel
- Ruchkys U de A (2007) Patrimônio Geológico e Geoconservação no Quadrilátero Ferrífero, Minas Gerais: potencial para criação de um geoparque da UNESCO. Tese de Doutorado—Instituto de Geociências, Universidade Federal de Minas Gerais, Minas Gerais, Brazil
- National Geographic Society - Geotourism Charter
- Fundamentals of Geotourism - About Geological Tourism
- National Geographic geotourism
- National Geographic Society - Geotourism Charter
- Mount Elephant, Derrinallum, Victoria, Australia Revisited.
- Missouri State University's Geotourism Program of Study
- Geotourism Brochure from Missouri State University Department of Geography, Geology, and Planning