Tree houses aren't just for kids, they are serious business. Whether constructed for fun or necessity, take a look at 25 amazing tree houses compiled by Web Urbanist that run the gamut of style, design and function. Built in trees, with trees, hanging from trees or around trees, architects and builders have expanded the tree dwelling Swiss Family Robinson prototype to encompass every style imaginable. See more amazing tree houses
Voyage to not very high up in a tree?
What in the world, hanging crates, outhouses, caskets?
...and The Swiss Family Robinson Residence:
All photos courtesy of: WebUrbanist