Do keep in mind that high-speed trains often require a reservation.
When traveling from one country to another, make sure that your Eurail Pass is valid in both countries.
Above: Scenery from a Milan-Paris TGV, feet up & glass of wine to hand.
I'll try & tell it like it is - you may find cheap train tickets a better deal.
Austria Belgium Bosnia Bulgaria Croatia Czech Republic Denmark Finland France Germany Greece Hungary Ireland Italy Luxembourg Macedonia Montenegro Netherlands Norway Poland Portugal Romania Serbia Slovakia Slovenia Spain Sweden Switzerland Turkey Whether you use a Eurail pass or buy cheap advance-purchase tickets, the train is the best way to tour the great cities of Europe, relaxed, in comfort, seeing a lot in a remarkably short time.
If you travel through a country where your pass is not valid, you'll have to buy an additional ticket for that part of the journey.
Before we start, first decide which of Europe's two great railpass ranges applies to you: If you live in Europe, you qualify for an Inter Rail pass, so hop over to the Inter Rail page.