Koh Chang
Koh Chang, one of the largest islands in the Gulf of Thailand, contains dense, steep jungle. Mu Ko Chang National Park, a preserve with hiking trails and waterfalls such as tiered Klong Plu, covers the interior and extends to offshore coral reefs. The coast is dotted with beaches and villages including Bang Bao, built on piers. Hat Tha Nam (aka Lonely Beach) has a waterfront party scene that attracts backpackers.