The island is a scuba diving site among coral reefs. The island totals an area of 69 rai, and most remains lush forest. While high cliffs occupy the west, white sandy beaches occupy the east and south of the island.
ศาลหลักเมือง
This shrine was first built of wood. Then it was replaced by a concrete building with Chinese characteristics. The old city pillar used to be in front of the shrine. A new one has been set up with a four-porched shelter.
วัดป่าประดู่
This ancient temple dates back to the Ayutthaya period. The wihan houses a large reclining Buddha image, 11.95 metres long and 3.6 metres high. Unusually, the reclining Buddha image lies on its left-hand side.
สวนศรีเมือง
This place was once used for the execution of prisoners. Now it has been rebuilt as a public park. At the front of the park is a famous Buddha image of Rayong, Phra Phuttha Angkhirot.
เกาะเสม็ด
Some people believe that this is the miracle island in Thai classical literature by Sunthon Phu. Ko Samet is a famous beach attraction of Rayong. One of the beaches is Ao Wong Duean in the middle of the east side. This beach forms an almost-complete circle.
อนุสาวรีย์สุนทรภู่
The monument was built to commemorate Sunthon Phu, a leading poet in the early Rattanakosin era, two centuries ago. There are statues of Sunthon Phu and characters from his famous literature.
วัดสารนารถธรรมาราม
houses a Buddha image imitating the Phra Phuttha Chinnarat in Phitsanulok Province. Four major pagodas surround the ubosot. They include Phra Pathom Chedi, Phrathat Phanom, a replica of Bodh Gaya, and Phrathat Chaiya.