Secluded in the Cambodian wilderness, this eco-stay is the brainchild of two conservation-minded expats who left jobs with NGOs to save 70 sq km of forestland and all the creatures calling it home. Accommodation includes two comfy traditional wooden houses on stilts and a treehouse built from reclaimed hardwood around a wild rain tree. Book ahead as early as possible and call for detailed directions.
In addition to sleeping in the canopy, guests go on guided zipline and hiking adventures, and return to camp for delicious, mostly vegetarian meals (US$15 per day). It's US$10 for a guide, and there's also a US$15-per-person fee for community development and preservation. Note that access in the wet season can be a challenge.