My wife, “Judy” and I have two boys, ages 7 and 9, and they want me to build them a treehouse in the giant oak tree in our backyard. I’m a master carpenter by trade, so this would be no big deal for ...

This isn’t your average backyard treehouse. The six-story stunner in Upstate New York stands nearly as tall as the trees it was built among. It looms above a small waterfall and is filled with secret ...