What to See:

The Mu Ko Chang National Park - National Marine Park comprising parts of Ko Chang and 46 other islands

War memorial monument - in the very south of the island

Waterfalls:

Klong Plu - the most popular, and the only one on the west side of the island

Klong Nonsi - on the east side of the island

Klong Nueng - said to be the most breathtaking

Khiri Petch - medium sized, about 3 kilometers from Salak Petch village

Kongoi - 5 waterfalls near Bangbao

The Thanmayom - near Thanmayom pier

What to do on Koh Chang

Package tours for snorkeling, diving, elephant riding etc. are widely available.

ThaiFun day cruises to southern islands. Relaxing and snorkeling. Very nice crew on board.

Khlong Plu waterfalls is medium size waterfall within a half a mile walk from parking area. Swimming possibility. Entrance fee to park 400 baht.

Ploy Scuba Diving come to the best dive sites with speedboat. All PADI Course / Diving Trips / Snorkelign Trips. ploy.travel@gmail.com

Snorkeling and Diving Koh Chang is maybe not the best diving spot in Thailand, but diving around Koh Chang gives some adventurous feeling

See Fireflies Boat trips on the lagoon near Khlong Prao beach to see fireflies can be organised through a travel agent/hotel. Year round. 150-200 Baht for 30 minute trip.