World's Best Treehouse Hotels

Why It’s Unique: Maravu, which sits on Fiji’s 168-square-mile Taveuni Island, features a treehouse built in an ancient rain tree with sweeping views of the turquoise-tinged South Pacific, as well as interior comforts like leather and palm-wood furniture and an outdoor courtyard with an open-air shower and a Jacuzzi pool.

Access: Rising staircase.

What to Do: Relax at the resort’s spa with a massage or a hydrating coconut scrub, or explore nearby Bouma National Heritage Park’s pristine rainforest and 65-foot waterfalls.