Baker Street is a London Underground station at the junction of Baker Street and the 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 Travelcard Zone 1 and is served by five lines. On the Circle and Hammersmith & City lines it is between Great Portland Street and Edgware Road. On the Metropolitan line it is between Great Portland Street and Finchley Road. On the Bakerloo line it is between Regent's Park and Marylebone, and on the Jubilee line it is between St John's Wood and Bond Street. From Wikipedia
