The journey between Frankfurt and Vienna (Wien) is made on board one of Deutsche Bahn's InterCity Express (ICE) services. Two services in each direction travel on/from Dortmund via Cologne (Koln), both good stations for connecting services. There are also a couple of sleeper train services that are good alternatives to this daytime route, including a EuroNight route between Vienna and Cologne, and another between Amsterdam and Vienna.
Regensburg is a German city situated at the confluence of the River Danube and River Regen. The city's historical centre is designated as a UNESCO World Heritage Site.
The city is well connected to national services, particularly to Munich. Transport within the city itself is provided by the Regensburger Verkehrsverbund (RVV).
When travelling between Vienna (Wien) and Cologne (Koln), you have the choice of either taking the daytime InterCity Express service, or this night time EuroNight sleeper train. Connecting service area available from Cologne to reach Frankfurt and onwards to cities including Amsterdam and Paris.
Onboard this train, a mix of accommodation options are available, including First and Second Class sleeping compartments, as well as Second Class couchettes (4 and 6 berth options).