The Danube is a major river in Central and Eastern Europe, flowing through nine countries. It is the second longest river in Europe after the Volga. The crossword solutions for the term Danube include BUDAPEST (8 letters), Linz (4 letters), INN (3 letters), Isar (4 letters) and VIENNA (6 letters). BUDAPEST is the capital of Hungary and is located on the banks of the Danube. Linz is a city in Austria situated on the Danube. The INN is a river in Germany that flows into the Danube. Isar is a river in Bavaria, Germany that also flows into the Danube. VIENNA is the capital of Austria and is located on the banks of the Danube.