Think you had the world’s greatest treehouse as a kid? Well this guy’s got you beat. Horace Burgess’s treehouse is located somewhere near Crossville, Tennessee and stands over 97-feet tall thanks to the 80-foot white oak tree it was built around which also happens to be about 12-feet in diameter at its base. It has 11 floors, somewhere in the neighborhood of 8,000 to 10,000 square feet, a miniature basketball court and is held together by roughly 258,000 nails.