Than Bok Khorani National Park
The park office is situated 46 km. from town or 1 km. from Ao Luek Nuea Market. Near the park office there are several natural ponds of emerald water in a shady forested area. Tourists can enjoy swimming in these pools. Other attractions in the park include several caves in limestone mountains, verdant mangrove forests, and beautiful islands which can be reached only by boat. Admission is 200 baht per person. Camping in the park can be done but tourists have to bring their own tents.

Tham Lot can be reached by boat from Bo Tho Pier. The pier is located 2 km. from Amphoe Ao Luek on the way to Laem Sak, where visitors can ride a long-tail boat along a canal passing through mangrove forests for 15 minutes. Tham Lot is a tunnel under a limestone mountain where a natural stream runs through a small tunnel and charming stalactite and stalagmite formations are found. The cave can be visited only during low tide.

Tham Phi Hua To is 500 metres from Tham Lot and can be visited by boat from Bo Tho Pier. The cave is in Phi Hua To Mountain which is surrounded by mangrove swamps. There are 2 split paths inside the cave. On the left lies the shortcut to the back of the cave where the sun can shine through, and on the right is a path to a chamber hall believed to have once been a shelter for cave dwellers. Prehistoric paintings of men, animals, human organs and numerous seashells can be seen in the cave. Big human skulls were also discovered, thus inspiring its name, “Big-headed Ghost Cave”.