You’re on a gorgeous island off the coast of Thailand—it doesn’t get much better than this. Spend the day on a lively, popular beach, or explore the Ang Thong National Marine Park’s secluded lagoons. Looking for romance? Choose a luxurious five-star resort, a simple, secluded bungalow or pretty much anything in between.

Paradise by day, party central by night, Chaweng is a favorite destination for sun-seekers and night owls alike. Choose Central Chaweng if you love nightclubs, music and fireworks. Head toward North Chaweng and Chaweng Noi for a more peaceful stay.

We're guessing they don't have a werewolf problem in Koh Phangan, because every month on the full moon, thousands of people take part in the Full Moon Party's all-night festivities, including music on the beach. By day, you'll find a lovely island with coconut trees and plenty of sandy white beaches. If you're a diver, visit Sailrock for a spectacular wall dive.

Drifting serenely in the Gulf of Thailand, the palm-fringed island of Ko Tao takes its name from the abundant sea turtles that reside on its shores. White sand beaches sheltered by steep hills – some only accessible with four-wheel drive vehicles – and 300 days of sun per year invite long afternoons of lounging.

Bali is a living postcard, an Indonesian paradise that feels like a fantasy. Soak up the sun on a stretch of fine white sand, or commune with the tropical creatures as you dive along coral ridges or the colorful wreck of a WWII war ship. On shore, the lush jungle shelters stone temples and mischievous monkeys. The “artistic capital” of Ubud is the perfect place to see a cultural dance performance, take a batik or silver-smithing workshop, or invigorate your mind and body in a yoga class.

Magical Mooloolaba is the perfect combination of sophisticated serenity and vibrant energy. The beach gleams under the pulsing sun, and sparkling sapphire water beckons swimmers, surfers, bodyboarders and casual waders alike. Snorkelers and jetskiers will delight in the beautiful waters, while those who prefer even racier adventures can dive with sharks and mingle with undersea creatures. Plus, "Mooloolaba" is awfully fun to say.

Byron Bay's beaches are dotted with lighthouses and surrounded by bottlenose dolphins, rays, whales and sea turtles. This former New South Wales whaling station turned tourist town is still strongly influenced by its recent bohemian past, when hippie lifestyles flourished. Bongos and didgeridoos sound in parks, sarongs and dreadlocks are common, and vegetarian restaurants abound. Give in to the casual vibe and stroll between beaches and bars for a low-key and happy day.