This fascinating journey takes you along one of the most beautiful stretches of the Danube right in the heart of the once brilliant imperial and royal Austro-Hungarian monarchy. From the Bavarian city of Passau (where three rivers meet) the cruise goes downstream to Budapest, the city often described as the'Queen of the Danube'. You pass through four European countries (Germany, Austria, Hungary and Slovakia) and three capitals (Vienna, Budapest and Bratislava).