NS - The Dutch Railways - railfan Web site, in English.
The European Railway Server - this Web site serves as an excellent starting point for information on European railways, with links to official railway Web sites and unofficial railfan Web sites. In English.
Railways Through Europe/Maps - overview maps of the railways in each European country. Including single and double track lines, and electrification voltages.
London Bus Routes - unofficial site with information of interest to bus enthusiasts.
Clive's Underground Line Guides - unofficial site includes historical and operational details of the London Underground.
Deutsche Bahn/German Railway - official Web site, includes computer generated itinerary planning for trains and buses throughout Germany. In German.