The svelte Danube Island stretches some 21.5km from opposite Klosterneuburg in the north to the Nationalpark Donau-Auen in the south and splits the Danube in two, creating a separate arm known as the Neue Donau (New Danube). Created in 1970, it is Vienna’s aquatic playground, with sections of beach (don’t expect much sand) for swimming, boating and a little water skiing.
The tips of the island are designated FKK (Freikörperkultur ; free body culture) zones reserved for nudist bathers, who also enjoy dining, drinking, walking, biking and in-line skating au naturel – it’s quite a sight. Concrete paths run the entire length of the island, and there are bicycle and in-line-skate rental stores. Restaurants and snack bars are dotted along the paths, but the highest concentration of bars – collectively known as Sunken City and Copa Cagrana – is near Reichsbrücke and the U1 Donauinsel stop. In late June the island hosts the Donauinselfest (www.donauinselfest.at).