Royal Alexandra Theatre 1907
A vital part of Toronto's cultural history, the Royal Alexandra is one of North America's oldest, continuously operating theatres. An early work of Toronto architect John M. Lyle, the theatre was financed by a consortium headed by "Toronto's youngest millionaire", Cawthra Mulock. It was built in a prestigious neighbourhood, opposite the Lieutenant-Governor's residence (later demolished) and on the former property of Upper Canada College, and was designed in the Beaux-Arts style. Granted royal title in honour of Queen Alexandra, consort of King Edward VII, the theatre brought to Toronto touring productions from London and New York and internationally revered performers. In decline by the 1950s along with the surrounding neighbourhood, the Royal Alexandra Theatre was courageously rescued from demolition in 1963 by Toronto entrepreneur "Honest" Ed Mirvish, Under the direction of Ed and son David Mirvish, the fully restored "Royal Alex" sparked the rejuvenation of the area and the growth of Toronto's entertainment district.
Plaque via Alan L. Brown's site Toronto Plaques. Full page here.