The Danube bicycle route between Passau and Vienna ranks as Europes best-known and most-loved cycling route - and for good reason. No other section of the river offers as diverse a range of landscapes and cultural landmarks or as many historical sites. Tranquil valleys, fertile plains, and steep vineyards line the banks of one of Europes great rivers, where pretty farms and glorious abbeys stand side-by-side. The loop of the Danube at Schlögen, the abbey at Melk, and the romantic Wachau wine-producing region are just some of the highlights along the 330 kilometer route.