Koh Samui is widely acknowledged as one of the world's most beautiful islands, Koh Samui is a holiday paradise set in the Southern part of the Gulf of Thailand and is the third largest island after Phuket and Koh Chang. The best beaches are on the north and east coast, with the most popular and beautiful being Chaweng Beach. A 51 km. Coastal road encircles the island of Koh Samui. Enjoy a unique golf course, access to other lovely beaches, forest hills of the national parks with waterfalls and elephant camps, water sport activities of all kinds and inspiring tours with adventure. See our selection of the top things to do in Koh Samui and enjoy your stay.