Obscenely cool tree houses

I had a really cool tree house my dad built me when I was a kid. It was about 10-12 feet off the ground, set on 4 posts with a ladder to get to the main deck. Once on the deck, you could go inside, sit at a desk, pop open one of the windows, or climb up on the roof. I have plenty of fond memories hanging out with my best friend in the thing. It was awesome.

Baumraum Tree House in Osnabrück, North-West Germany

But absolutely nothing compares to some of the insanely creative and obscenely cool tree houses on display at Toxel.com. I never knew what I was missing until I saw these.