TQ0594 : Rickmansworth Underground Station
taken 4 years ago, near to Rickmansworth, Hertfordshire, England
Rickmansworth is an interchange railway station in Hertfordshire, served by the Metropolitan line and by Chiltern Railways. It is one of the few London Underground stations beyond Greater London and as a consequence is in Travelcard Zone 7. The station opened in 1887.
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