Khao Laem Ya-Mu Ko Samet National Park

Khao Laem Ya-Mu Ko Samet National Park is a marine national park in Mueang Rayong District, Rayong Province, eastern Thailand. Established in 1981, it covers 131 square kilometres of coastline and islands in the Gulf of Thailand, including Ko Samet and surrounding islets. Notable for white sandy beaches, clear waters, coastal viewpoints, and protected marine ecosystems, it combines mainland headland at Khao Laem Ya with an archipelago popular for swimming, snorkeling and nature-based tourism.

Visitors can expect a coastal and island park with two main areas: the mainland headland at Khao Laem Ya with a scenic viewpoint, nature trail and Mae Ramphueng Beach, and the Mu Ko Samet archipelago accessible by ferry from Ban Phe Pier. The islands offer white sandy beaches such as Hat Sai Kaew and Ao Wong Duean, clear water for swimming and snorkeling, forested interior trails, viewpoints, and basic national park accommodation and camping areas. Facilities are concentrated at beaches and the park headquarters.