Transportation
Book Tours On-Line check the price and availability of tours all over the world and book on-line.

Eurail Train Passes allow you to travel quickly and conveniently throughout Europe.  The best value for multi-country travel is usually a Eurail Global Pass or Eurail Select Pass.   If you are only visiting Luxembourg or the Benelux (Belgium, Netherlands, Luxembourg) region, consider a Benelux Pass. If you are visiting central Europe, consider a German-Benelux Pass (covers Germany, Belgium, the Netherlands, and Luxembourg) or a France-Benelux Pass (covers France, Belgium, the Netherlands, and Luxembourg).
 

Auto Europe  offers discount car rental services, discount airfare, and discount hotel reservations.
 

MotoEuropa/IdeaMerge On-line guide to traveling Europe by car, with specific country and road information.   Includes bulletin boards, ride-share information and more. Great rental deals for those traveling 17 days or more. 

BusAbout See Europe your own way with BusAbout Explorer Europe travel.  A hop-on hop-off network designed for independent travelers who want choice as they travel, with every opportunity to change their mind as their trip develops.  It's a great feeling rocking up to a city and deciding to stay a week instead of a night: BusAbout Explorer gives you the flexibility to do exactly that.