The Donauinsel, or Danube Island, is an island in the Danube River that was created when a new channel was dug as a flood control measure. It is 13 miles long and offers much recreational activities and dining and drink options. Fun fact, Madonna gave her first Austrian concert here. Funner fact there are nude beaches located at both ends of the island. You’ll find me here when I return to Vienna. The island is part of my route out of Vienna as I head up river.