11. Post Ranch Inn, Big Sur, California, USA
Situated on top of a 1,200 foot cliff above the Pacific, the Post Ranch Inn is one of the most stunning natural escapes in the United States. Built with organic wood and slate and featuring impressive floor-to-ceiling windows, this northern Californian retreat feels like a luxurious tree house. Some rooms contain rooflines covered in wildflowers, while other rooms overlook the forest floor. Add nighttime stargazing, infinity hot pools and a gourmet candlelit restaurant, and you have the makings of heaven on earth.