The Capitol Theatre was located in Prince's Street, just off O'Connell Street, Dublin, and began life on 10 August 1920 as the La Scala Theatre and Opera House. Designed by architect T. F. McNamara it had two balconies in the 1,900-seat auditorium with 32 private boxes. On St. Patrick's Day 1923 Irish-American Mike McTigue won the World Light-Heavyweight Championship from French-Sengalese champion Battling Siki at the La Scala Opera House.
Despite its name, the La Scala was a cinema. Paramount Pictures took over the lease on the building and renamed it the Capitol in 1927.