The Danube River cruise is a river cruise on Europe's longest river, the Danube River, which is especially popular as a tourist route from Passau in Germany to Budapest in Hungary.
Today, the Danube can be reached by large nautical vessels from the Black Sea to Braila in Romania, river vessels to Kelheim in Germany, and small vessels to Ulm. The Rhine-Main-Danube Canal, completed in 1992, allows navigation from Rotterdam in the North Sea to Sulina in the Black Sea, and since 1994 has been designated as a Pan-European corridor.
Cruise ships for tourists are also popular, and cruises on the Danube River are especially popular from Passau in southern Germany to Budapest in Hungary, passing through Austria and Slovakia on the way.[1]