In 1863, the North Pier was completed, rapidly becoming a centre of attraction for elite visitors. Central Pier was completed in 1868, with a theatre and a large open-air dance floor. The town expanded southward beyond what is today known as the Golden Mile, towards South Shore, and South Pier was completed in 1893, making Blackpool the only town in the United Kingdom with three piers. In 1878, the Winter Gardens complex opened, incorporating ten years later the Opera House, said to be the largest in Britain outside London.
