http://www.eurail.com/ The Eurorail (informally known as Eurail) Group G.I.E. is a Netherlands-based company, registered in Luxembourg, that sells passes and tickets for European railroads. It is owned by a group of European rail carriers and shipping companies.
Its principal products are Eurail passes (formerly known as "Europass" and informally known as Eurorail Passes) and InterRail passes, with which a passenger has largely unlimited ability to travel on nearly all European railroads and some shipping lines at a fixed price per day of travel or travel within a certain number of days. Eurail sells a variety of passes, including those specific to two to five bordering countries, discounted passes for groups of up to five people travelling together, or for those under 26, passes which provide unlimited travel in a fixed period, and passes which provide a fixed number of days of travel in a longer period. The Eurail Pass is priced for first-class travel, while some individual countries have second class passes at lower cost.