Environmentally responsible travel and visitation to relatively undisturbed natural areas, in order to enjoy and appreciate nature (and any accompanying cultural features — both past and present) that promotes conservation, has low visitor impact, and provides for beneficially active socio-economic involvement of local populations. (Source: IUCN Ecotourism Programme, 1992)

Tourism which make optimal use of environmental resources that constituting a key element in tourism development, maintains essential ecological processes and helping to conserve natural heritage and biodiversity, as well as respects the socio-cultural authenticity of host communities, conserve their built and living cultural heritage and traditional values, and contribute to inter-cultural understanding and tolerance. (Source: UNEP)