The Royal Alexandra Theatre, built in 1907, is located in Toronto, Ontario, Canada. It is the oldest continuously operating theatre in North America. The venue has a seating capacity of 1,497, and is designed in a beaux-arts style, with a proscenium stage, built in a typical 19th century British theatre style. The theatre has been managed by Mirvish Productions since 1986. It was designated under the Ontario Heritage Act in 1975, and it was named a National Historic Site of Canada in 1987, on the 80th anniversary of the theatre.