The Olympic Stadium is a multi-purpose stadium in the Hochelaga-Maisonneuve district of Montreal, Quebec, Canada built as the main venue for the 1976 Summer Olympics. The stadium is nicknamed "The Big O", a reference to both its name and to the doughnut-shape of the permanent component of the stadium's roof; "The Big Owe" name has also been used to reference the astronomical cost of the stadium and the 1976 Olympics as a whole. The tower incorporated into the base of the stadium, called the Montreal Tower, is the tallest inclined tower in the world at metres ( ft).