Ko Samui (or Koh Samui) is one of Thailand’s largest islands and the largest island in the Chumphon Archipelago which form the Ang Thong National Marine Park. It is an oasis of natural beauty with its white sandy beaches, dazzling coral, luscious lagoons, picturesque waterfalls, swaying coconut trees and crystal clear water. Administratively part of Surat Thani Province, Ko Samui welcomes everyone, from budget travellers, to the wealthiest holidaymakers.