If you visited Toronto before 1997, you might remember this as the O'Keefe Centre. It became famous in 1974 when Mikhail Baryshnikov defected after performing here. Since then, Hummingbird Communications has invested in renovations and refurbishing. This 3,223-seat center is still the home of the National Ballet of Canada; the Canadian Opera Company also performs here, though it has been trying to find another home.