Cat Tien park is a hidden treasure just a few hours form HCMC and if you stay at Ta Lai longhouse you will be supporting the environmental conservation of the area and a community based tourism initiative, it is also really fun and beautiful!
Reposting this post because GBS is currently in the midst of fundraising drive in order to stay open! Please consider making a donation if you can! I have worked with the Green Bamboo Boys Shelter in Vietnam for four years and it is an amazing organization that does great work for disadvantaged boys in Saigon.
Action for the city is a non-profit organization based out of Hoi An whose goal is to make the city more green and more livable for tourists and residents. They aim to be a sustainable model for all development in Vietnamese cities, something which is sorely needed as growth in Vietnam continues at a rapid pace.