Imagine waking up everyday and looking directly into a misty forest. Your bed supported by the strong branches of an oak tree. Your world suspended high above the earth. Ah, to live in a treehouse. There's something magical and childlike about the idea. But who wants to actually live in a treehouse? Now you can just stay in one for a few nights. I did a roundup for Outside on the best treehouses around the world that you can actually stay in, like this one above, from the Tree Hotel in Sweden. Next up? I'm writing about hotels where you can sleep in an Airstream trailer. What other alternative lodging should I cover?