Baker Street is a London Underground station, located at the junction of Baker Street and Marylebone Road in the City of Westminster. It is one of the original stations of the Metropolitan Railway (MR), the world's first underground railway, opened on 10 January 1863.
The station is in London fare zone 1 and is served by five lines. On the Circle and Hammersmith & City lines the station is between Edgware Road and Great Portland Street stations, and on the Metropolitan line it is between Finchley Road and Great Portland Street stations. On the Bakerloo line the station is between Marylebone and Regent's Park stations, and on the Jubilee line it is between St John's Wood and Bond Street stations.