 The station opened as part of the first section of Metropolitan Railway project on 10 January 1863; the first part of the Underground to open.A separate station for the Great Northern, Piccadilly and Brompton Railway (now the Piccadilly line) opened on 15 December 1906, with the City & South London Railway (now the Northern line) opening on 12 May 1907.The Metropolitan line platforms were moved to their current location in 1941.