The Interrail ticket is a rail ticket designed for EU citizens (Eurail is the equivalent for non-EU citizens). The
ticket divides Europe up into eight zones:
Zone A Great Britain, Ireland.
Zone B Norway, Sweden, Finland.
Zone C Germany, Denmark, Austria, Switzerland.
Zone D Czech Republic, Hungary, Croatia, Poland, Slovakia.
Zone E Luxembourg, The Netherlands, Belgian, France.
Zone F Portugal, Spain, Morocco.
Zone G Greece, Italy, Slovenia, Turkey
Zone H Bulgaria, Macedonia, Romania, Yugoslavia.
You can choose which zones you visit and the overall duration of the journey. *However* you
can choose only one zone for a 16 day trip, two zones for a 22 day trip and all zones for a 1 month trip; it is therefore
more restrictive than it first appears.
The interrail ticket is open to everyone as there are three fares: under 12s, 12-26 year olds, and 26+.
Not every travel agent sells the interrail ticket, but I know for certain that STA Travel and Thomas Cook do.