Guided walking holidays - guided walking in India & Ethiopia. Mongolia’s Leading Nomad Centered Cultural Eco Travel and Responsible Community Tourism Agency and Foundation. TravelGreen Homepage. Global Sustainable Tourism Council - TRAVEL FOREVER. The GSTC Criteria are the result of a worldwide effort to develop a common language about sustainability in tourism.
Focusing on social and environmental responsibility, as well as the positive and negative economic and cultural impacts of tourism, the criteria are organized into four topics. Sustainable management Socioeconomic impacts Cultural impacts Environmental impacts (including consumption of resources, reducing pollution, and conserving biodiversity and landscapes) Solimar International - A Sustainable tourism consulting and marketing - Solimar International.