Ko Samui is Thailand's second-largest island, a popular tropical destination in the Gulf of Thailand known for its palm-fringed beaches, crystal-clear waters, and vibrant resort scene. Chaweng Beach is the liveliest area with bars, restaurants, and nightlife, while the quieter Lamai, Bophut, and Mae Nam beaches offer a more relaxed atmosphere. The Big Buddha statue at Ban Rak beach and the Secret Buddha Garden in the rainforest-covered hills are notable cultural attractions.