10. Tonle Sap, Cambodia
Tonle Sap is the largest freshwater lake in Southeast Asia, expanding many times its size during monsoon season. Because of the incredible change in landscape between dry and wet seasons, the people who live near here stay on floating villages – complete with television sets, gas stations, and other typical amenities. It is a surreal sight to behold, especially since the far shore of the lake cannot be seen, leaving you feeling as if you are afloat at sea. It is possible to visit as a daytrip from Siem Reap.