Donauinsel is a recreational island in Vienna, Austria, located between the Danube River and the New Danube. Visitors can walk, cycle, jog, skate, enjoy boating, take part in water sports, relax in picnic areas, and spend time at family-oriented facilities such as playgrounds and bathing areas. A notable feature is that the island extends for approximately 21 kilometres and includes a range of leisure facilities, including a water playground, sports areas, and dedicated spaces for outdoor activities.