Probably the most daring and innovative house ever built is Ã¢â‚¬ËœThe Subterranean MansionÃ¢â‚¬â„¢. This futuristic looking home features an incredible waterslide that leads from the master bedroom down to the pool. This fabulous 4,300 square foot residence comes with all the basic necessities, including three bedroom suites, indoor swimming pool, central Jacuzzi with atrium above, gym, bar area, changing room with shower, plant room and garage. The beautiful gardens that surround the property take up approximately 0.3 of an acre. This magnificent dream house is listed on Country Life.