Square Feet: 48,000 (53,000 including outbuildings)
This massive mega mansion is one of the largest private residences in Canada. The home was supposed to be 55,000 square feet, but had to be scaled down. The home was built by Hugo Powell, the CEO of the Belgiain brewing comapny Interbrew. The mansion sits on 10 acres on the shores of Lake Ontario. The grounds include a chapel, a gatehouse, a boathouse, greenhouses, and a tennis pavilion.