Geograph - photograph every grid square

Plaistow Underground station is a London Underground station on Plaistow Road in Plaistow neighbourhood of the London Borough of Newham in east London. The station is on the District line and the Hammersmith & City line, and in London fare zone 3. The station was opened in 1858 by the London, Tilbury and Southend Railway on a new direct route from Fenchurch Street to Barking that avoided Stratford. The station was served by the District Railway from 1902, switching to electric services in 1905. The Fenchurch Street–Southend service was withdrawn from Plaistow and the platforms used by that service have been abandoned since 1962.

The London Underground system is also known as the "Tube". It is the oldest underground system in the world, the first section dating from 1863. The present system has over 250 miles of track and 272 stations. There are 11 lines covering Greater London, Essex, Buckinghamshire & Hertfordshire. Nearly half the system is above ground.
Wikipedia: Link
Transport for London: Link

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".