Mu Ko Ang Thong

This stunning national marine park is made up of more than 40 small islands full of diverse flora and fauna, dense forests and mangroves. If you’re staying at the Four Seasons, book Siamseas, a private thirty-six-foot cruising boat, for the trip, which leaves around 9:30 in the morning and returns in the afternoon. The captain will seek out the best snorkeling and diving spots, and guests can picnic at a secluded beach.