It might not be what you'd normally think of a resort — you won't find any five-star restaurants or infinity pools here — but that doesn't mean the Out'n'About Treehouse Treesort isn't worthy of the title. Set on 36 acres of private pasture and woods, this unique spot offers a dozen of so treehouse accommodations for you to stay in, plus a central kitchen/bathroom area, and tons of outdoor activities like ziplining, horseback riding, and river rafting. Surrounded by national forest land and old growth wilderness, it's as close to nature as you're likely to get without sleeping in a tent.