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.

Map24 - Maps and Routing
Interactive maps and route planner. Information on a number of country, with geo-location used to redirect the surfer to their country of origin.

MeetMeMap
Provides door to door travel directions - covers train, bus, ferry, foot and driving directions.