Geograph - photograph every grid square

Waterloo is the busiest station in Britain (passenger numbers) and the largest of the London terminal stations.
Opened by the London and South Western Railway (L&SWR) on 11 July 1848 as 'Waterloo Bridge Station',it was designed by William Tite. In 1886 it officially became 'Waterloo Station'.
In 1899 the L&SWR decided on a total rebuilding. The new station was opened in stages, finally opened in 1922 with 21 platforms and a concourse nearly 800 feet (250 m) long. The main pedestrian entrance, the Victory Arch (known as Exit 5), is a memorial to company staff who were killed during the two world wars.
Platforms 20 and 21 were lost to the Waterloo International railway station site, which from November 1994 to November 2007 was the London terminus of Eurostar international trains to Paris and Brussels.
A few minutes walk from the main station, connected by a walkway, is Waterloo East, which connects with trains from Charing Cross

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".

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