There are more waterfalls in Thailand than you can shake a stick at.
The Golden Triangle
The Mekong River. The border between Laos, Thailand, and Myanmar.
Mountains of Northern Thailand
The Similan Islands
The Similan Islands is a national park consisting of 9 islands in the Andaman Seas, 40 miles off of the coast of Thailand. We stayed on a live-aboard boat for three days while scuba diving.