Koh Samui is a tropical paradise located off the east coast of Thailand in the Gulf of Thailand. With its beautiful beaches, lush jungles, and vibrant culture, it's no wonder why Koh Samui is one of the most popular tourist destinations
From Wikipedia
Ko Samui or Koh Samui, often locally shortened to Samui, is an island off the east coast of Thailand. Geographically in the Chumphon Archipelago, it is part of Surat Thani Province, though as of 2012, Ko Samui was granted municipal status and thus is now locally self-governing. Ko Samui, with an area of 228.7 square kilometres (88.3 sq mi), is Thailand's second largest island after Phuket. In 2018, it was visited by 2.7 million tourists.