I've always been fascinated by treehouses. Despite having a huge garden and plenty of mature trees we never did get round to having one when we were kids (we had plenty of ground level 'den's instead!). I dreamed of one day living in a treehouse. I'd still gladly live in one if the opportunity arose.
So I was really chuffed to find a 2012 treehouse calender with fabulous colour photo's of totally awesome treehouses. Here's January:
This book is a good read if you like this sort of thing: The Treehouse Diaries by Nick Weston.