Baker Street is a station on the London Underground at the junction of Baker Street and the Marylebone Road. The station is in Travelcard Zone 1 and is served by five different lines. It is one of the original stations of the Metropolitan Railway (MR), the world's first underground railway, opened in 1863. 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.