Sheffield exists to promote chamber music. It describes itself as the largest promoter of chamber music outside London. Sheffield has two large theatres, the Lyceum Theatre and the Crucible Theatre, which together with the smaller Studio Theatre make up the largest theatre complex outside London, located in Tudor Square. The Crucible Theatre is the home (since 1977) of the World Snooker Championships and hosts many well-known stage productions throughout the year. The Lyceum, which opened in 1897, serves as a venue for touring West End productions and operas by Opera North, as well as locally produced shows. Sheffield also has the
High Street (Sheffield) tank stocked with mature fish. The "Hole in the Road" subterranean system was opened on 27 November 1967, however, the walkways fell into disrepair during the early 1990s and were finally closed to the public on 10 January 1994. The "Hole in the Road" network was filled in with rubble from the Hyde Park flats and re-developed as part of the Sheffield Supertram system. For part of its length High Street carries the A621 road before it swings south down Arundel Gate. The South Yorkshire Supertram system was completed in early 1995 and runs along High Street in its own