The Grand Opera House was an opera house and concert hall located in Toronto, Ontario, Canada. Opened in 1874 on Adelaide Street West, west of Yonge Street, the Grand Opera House was Toronto's premier concert hall during the late 19th century. Designed in the Second Empire style with 1750 seats, the hall was the first in the city to feature gaslights that could all be switched on or off simultaneously with one electric switch. The Grand Opera House's stage hosted some of the era's best-known performers, including actors Maurice Barrymore, Sarah Bernhardt and Sir Henry Irving, soprano Emma Albani, as well as Italian baritones Giuseppe Del Puente and Antonio Galassi. Visiting lecturers included Oscar Wilde. During its initial years, the Grand Opera House was managed by Charlotte Morrison, a