London's iconic transportation symbol, the roundel, is 100 years old this year and a new online exhibit at the London Transport Museum features some amazing galleries of architecture, promotional material, livery and a great illustrated history of the mark.
posted by salishsea on Dec 4, 2008 - 10 comments

Live in an underground dome home.
posted by Burhanistan on Aug 15, 2007 - 30 comments

Photographs of London Underground Stations Taken on black and white film, then coloured in photoshop. A nice example.
posted by carter on Jan 25, 2005 - 34 comments

Fabulous images of the Moscow Metro underground, also known as "the people's palaces". Click "M"s on the entry map to view gorgeous (often architecturally surreal) panoramic images, and visit the picture gallery for sweet details. Via Jorgen at Viewropa.
posted by taz on Jan 14, 2005 - 24 comments

Undercity reveals Gotham's secrets as uncovered by a guerrilla historian. [via Anil Dash]
posted by riffola on Jun 26, 2004 - 9 comments