Gates said he doesn't have too many extravagances in his life, but he does have a Porsche and his own plane, admittedly "a huge indulgence." But DeGeneres pressed him, asking if he had an "aquarium with sharks in it." He doesn't have that, but he said he does have a room dedicated to trampolines in his house. "We have a trampoline room in our house, the kids like that," he said. "Indoor trampolines, I recommend it. […] It's a room with a very high ceiling."
The trampoline room has a 20-foot ceiling, and overall the exercise facilities, including locker rooms, a sauna, and a steam room, take up 2,500 square feet. Business Insider reports that it took Gates $63 million and seven years to build the 66,000-square-foot estate.
Of course, Bill and Melinda Gates put the vast majority of their own money into their charitable foundation, helping people around the world. But hey, when you have billions of dollars, why not have a room dedicated to trampolines, too?