The International Ecotourism Society has been promoting responsible tourism to natural areas for more than 15 years. How does it do this? By creating a network between institutions and the tourism industry, by educating tourists and tourism professionals, and by encouraging the tourism industry to integrate the principles of ecotourism into its operations and policies.

As the world’s oldest and largest international ecotourism association, TIES seeks to be the global source of knowledge and advocacy uniting communities, conservation, and sustainable travel. And its site offers tips and information on green certification programs.