Rayong (ระยอง) located at Eastern board of Thailand, located approximately 220 kilometers from Bangkok. It consists of 3,552 square kilometers area and 100 kilometers of beach connect to the gulf of Thailand. The 10 islands group is abundant with marine resources. It contains many oddly shaped islands and rocks. The largest island is Koh Samet which is well known in South East Asia.

For Koh Samet (เกาะเสม็ด), there are 14 of calm and white beaches around this Island and surrounded by colorful coral reefs, providing such aquatic sports as swimming, snorkeling and scuba diving. You can engage in these activities all year around because not only the weather is always warm, but the island is not much affected by the monsoon, being located off the east coast.