Treehotel, Sweden: Hidden away among silent woods and snow banks in Swedish Lapland, Treehotel has an apartment-like cabin built into the canopy, 32 feet above the ground.
Tierra Atacama, Chile: Designed to disappear into the spectacular surroundings, the adobe Tierra Atacama seems right at home in the middle of the world's driest non-polar desert -- about a two-hour flight northeast of Santiago.
Song Saa, Cambodia: Scuba-diving couple Rory and Melita Hunter first discovered Song Saa in 2006, in the middle of the Koh Rong Archipelago, under heaps of trash. Since then, they've turned it into Cambodia's first marine reserve with 24 eco-friendly wooden villas.
Fogo Island Inn, Canada: Built on a rocky outcrop in Newfoundland, the inn feels as if it's floating above the water thanks to floor-to-ceiling views that frame crashing waves and moody skies.
COMO Uma Punakha, Bhutan: With sweeping views of the Himalayas, this remote refuge in the heart of Bhutan overlooks the Mo Chhu River swirling through rice paddies, and offers many spa indulgences.
Longitude 131°, Australia: Sleep under the stars at Longitude 131°, a remote wilderness lodge in the middle of Australia's World Heritage Uluru-Kata Tjuta National Park, overlooking Ayers Rock.
Four Seasons Tented Camp, Thailand: This luxury "camp" is built on a cliffside overlooking the Ruak River in northern Thailand, surrounded by the jungles and mountains and elephants roaming freely.
Amangiri, Utah: In the middle of desert plains, this hotel does its best to blend into the surroundings. The flat mesas and rolling dunes are in eyesight from the bedrooms, and can be glimpsed in the open desert by foot, horse, hot air balloon or private plane.
Southern Island Lodge, Australia: Snaking along the coastline of Kangaroo Island in southern Australia, this lodge makes the most of ocean views from its perch atop a limestone cliff.
Wildflower Hall, Shimla, India: This hotel and spa sits 8,250 feet above sea level and is tucked away in the mighty Himalayan mountain range, a 45-minute drive from the Shimla, the nearest town.
Wolwedans Dunes Lodge, Nambia: This camp is located in the heart of Namibia's 200,000-hectare NamibRand Nature Reserve, one the largest private reserves in Africa. Visitors might see giraffes, baboons, oryx, zebras, foxes and over 100 bird species.