Koh Chang is a large island in Trat Province, eastern Thailand, known for tropical beaches, waterfalls, rainforest and a more relaxed atmosphere than Phuket or Koh Samui. The island is part of Mu Ko Chang National Park and is popular for beach holidays, snorkeling, diving and nature trips.Location: Trat Province, Thailand Best for: Beaches, nature, snorkeling, diving, island escapes Getting there: Ferry from the mainland near Trat to Koh Chang