Geograph - photograph every grid square

Upton Park is a London Underground station on the District and Hammersmith and City lines, in Upton Park. It is in Zone 3.
The station was opened by the London, Tilbury and Southend Railway (LTSR) in 1877. District line service began in 1902, and the Hammersmith & City (at that time the Metropolitan line) followed in 1936.
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.

A few years ago I read a book by Mark Mason "Walking the lines" in which he walked the route of the London Underground lines, overground. I will repeat this visiting all 272 stations (some more than once). My route tries to follow the line of the railway as closely as possible, using footpaths and roads, deviations are made to make the walk more "interesting".