A luxury hotel idea in Sweden is being touted as the TreeHotel, a concept that lets visitors get up close and personal with nature by sleeping in a hotel room treehouse. The TreeHotel will have four rooms -- the cabin, the Blue Cone, the Nest and the Mirrorcube -- which are all designed as luxurious treehouses that let you be at one with nature.

I think this is a pretty cool idea, letting users revel in their childhood memories of tree forts, but on a much more sophisticated level. If you're ever in Sweden and love nature, check out the TreeHotel's digs.