See also:

• Recreation: Outdoors: Caving: Urban Exploration  (620)

• Metro Bits   - Exploration of subways around the world, including arts and architecture, logos, unique destinations, FAQs and trivia, and pictures.

• Chris's Transit Pics Website - Showcases photographs of subways, buses, railroads, and monorails from a variety of locations. Also features transportation information for tourists in New York City.
• Flickr: Metros (Around the World) - Subway and metro cars, tunnels and stations, signs and people from around the world.
• Flickr: Subway - Subway, metro, underground, skytrain, mono-rail, MRT, MTR... the self portrait spirits of city.
• Flickr: Subway Around the World - Subway pictures taken on the subway/ underground around the world.
• Flickr: Subway photos - Photos of people waiting for their train, taking a ride home, or abstract photos of the subway itself.
• Flickr: Underground Subways - Images of underground railways and subway systems from around the world.
• Flickr: Undergrounds and Subways - Photos taken from the undergrounds, metros and subways.
• Subway Navigator - Maps and stations of subways and other heavy rail transit systems throughout the world, and a route finder detailing the path between any two stations.
• The Subway Page - Maps for subway transit systems from a number of cities all over the world.
• TubeMap.com - Provides direct links to route maps from subways around the world.
• UrbanRail.Net - Information on subway systems organized by continent, and news, links, literature, and a gallery of general subway information.