Cedar Creek Treehouse, Washington State
With an abundance of tall coniferous trees, the Pacific Northwest is a perfect place to build a tree house, and not surprisingly, the region is home to some of the most innovative tree houses in the world. Perched about 50 feet (15.24 meters) above ground in a more than 200-year-old red cedar, the Cedar Creek Treehouse is one of the best examples in the area. The lofty, two-level bed and breakfast has enough space to sleep five, and it features a sunroom, a small kitchen, and stunning views of Mount Rainier and Sawtooth Ridge. But for the best views, guests can take the "stairway to heaven," a rainbow-colored bridge that takes you up to an observation platform located 100 feet (30.48 meters) off the ground. The solar-powered tree house is completely off the grid, and in the colder months it uses propane heat. Rates start at $300 per night for two people [source: Butter].