The Donauinsel (Danube Island) is a long, narrow artificial island in central Vienna, Austria, lying between the Danube river and the parallel excavated channel Neue Donau ("New Danube"). The island is 21.1 km (13.1 mi) in length, but is only 70–210 m (230–689 ft) wide. It was constructed from 1972 to 1988 primarily as a measure for flood protection.[1]
It has since become the most popular recreational area of the city.[1]