Skyscrapers of the True North. They abound here in bustling cities like Toronto and Montréal. Calgary's buildings stem from the fact that it is Canada's second largest head office city. Vancouver's were built to house people needing views. Home to the world's tallest self-supporting structure, the CN Tower, Canada's high-rise architecture takes a backseat to no country. So don't let anyone tell you Canada is the land of teepees and igloos. That was a long time ago. Since then they've been replaced with corporate blockbusters and skyscraping condos.