When I was a kid we had a Tree House in the back yard. It was about 8 feet up in a big oak tree. It was a simple creation four walls, a wooden plank floor and a roof covered with leftover shingles. It was nothing fancy, but held a lot of memories in.
Bluebird Treehouse The Zip Line Ride take-off is from the deck. The long cable is anchor high above to the tree and the other end of the cable is secured to a tree. Oh come on it has a zipline seat, a ZIPLINE seat, how cool!