Geograph - photograph every grid square

Baker Street Underground station is at the junction of Baker Street and the Marylebone Road. The station lies 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. On the Bakerloo line it is between Regent's Park and Marylebone, and on the Jubilee line it is between Bond Street and St. John's Wood.
Wikipedia: Link

Mark Wallinger, one of the UK’s leading contemporary artists, has created a major new artwork for London Underground to celebrate its 150th anniversary. The result, commissioned by Art on the Underground, is a multi-part work on a huge scale that will be installed in every one of the Tube’s 270 stations.