Some of the most beautiful beaches in the world line a tiny spit of land just off the eastern coast of Thailand. The island of Ko Samui, ringed with opulent, sandy shores, is best enjoyed in private.

At the Six Senses Hideaway Samui on the island's northern coast, Thai culture and natural beauty are served with luxury -- and a touch of exclusivity. While other travelers fight for a spot on Ko Samui's beaches, enjoy the quiet of a private compound. Wander among the resort's 66 villas, perched on the water-side hills in the style of a traditional Thai fishing village. Spend the day snorkeling at the Ang Thong National Marine Park, or make a short pilgrimage to the Big Buddha, a shimmering, 40-foot-tall gold statue. Back at the Hideaway, the island's other treasure awaits: The emerald sea rolls onto a gold-sand beach, hidden from the throngs. Dip into the plunge pool outside your ocean-facing bedroom; indulge in an exfoliating treatment with Tamarind, brown rice and milk in the Six Senses open-air spa; dine on scallops with almond oil at the sunset-bathed On the Rocks restaurant; or embrace the quiet stretch of coastline that's always only a few steps away. After all, what could be better than the most beautiful beach in the world? Having the most beautiful beach in the world all to yourself. sixsenses.com

More Samui Sanctuaries

• Spread out on the 220-yard-long private beach at The Tongsai Bay, a resort on the northeast coast of the island. tongsaibay.co.th

• Find seclusion at the intimate, 25-room Kanok Buri Resort on the west coast. kanokburiresort.com

• Read a recent trip report, see an interactive map and photo gallery by clicking here.