The only natural lake in Thailand. It receives water from the Banthat Mountain Range and Sankalakhiri Mountain Range and is the point where many canals converge together before flowing into the Gulf of Thailand. The length from the estuary to the north is about 80 kilometres, and the widest part is about 20-25 kilometres.

It is a mountain next to the sea bounded to Khanom and Sichon. At present, it is wherethe site of the Wildlife Sanctuary is located. Located in Tambon Thung Sai. There are many beautiful beaches and attractions.

Khao Sammuk is in the seal of Chon Buri.  It is hill between Baan Ang Sila and Bang Saen Beach. There is Chao Mae Khao Sammuk shrine.

Bang Saen Beach is approximately 14 kilometres away from Amphoe Muang, Chon Buri. To get there, take Sukumvit Road then turn right at km.104 and continue for 3 kilometres. The beach is a popular tourist attraction for Thai people.

The only natural lake in Thailand. It receives water from the Banthat Mountain Range and Sankalakhiri Mountain Range and is the point where many canals converge together before flowing into the Gulf of Thailand. The length from the estuary to the north is about 80 kilometres, and the widest part is about 20-25 kilometres.