There are a number of services that operate between Amsterdam and Frankfurt. This particular service is the high-speed Inter City Express (ICE), operated by Deutsche Bahn.
Arnhem is a city in the east of the Netherlands, situated on the River Nederrijn. The city's main railway station, is served by a range of inter-city services as well as the ICE to Germany and the NS HiSpeed train to Moscow.
There is one direct service per day between Amsterdam and Prague, although there are plenty of indirect services that involve a change at Berlin (although that route is dealt with on a separate page). This service is operated daily by Deutsche Bahn's City Night Line sleeper service, Kopernikus / Phoenix, and calls at Cologne and Berlin en route.
The key cities of Amsterdam, Munich and Innsbruck are connected by an overnight City Night Line (CNL) sleeper service known as 'Pollux', that also travels via Cologne, Frankfurt and Stuttgart.
The same journey can be made during the day if so desired, although requires a change of train at Frankfurt.
The City Night Line service between Amsterdam and Copenhagen takes place aboard the Borealis sleeper train. A restaurant car serves passengers between Hamburg and Copenhagen. There are two border crossing points at Emmerich and Flensburg.