Danube Island
A twenty-one kilometre artificial island built as flood defence, now Vienna's beach, and host to a free music festival.
Updated 21 October 2026
The Donauinsel was made, not found: between 1972 and 1988 a relief channel, the Neue Donau, was excavated parallel to the regulated Danube, and the spoil ridge left between them became an island twenty-one kilometres long and up to two hundred and fifty metres wide. Its function is flood control - the channel takes the surplus when the river runs high, and gates at either end are closed and opened accordingly - and Vienna has not had a serious flood since. What the city then did with it was recreational: beaches, bathing on the still water of the Neue Donau, cycle and skating paths the full length, barbecue areas, naturist sections at the north and south ends, restaurants and bars in the middle. The Donauinselfest each June is one of the largest free open-air music festivals in Europe.
What's there
- A twenty-one kilometre made island - the spoil ridge from a flood relief channel.
- Bathing on still water - the Neue Donau side used as the city's beach.
- Cycle and skate paths - running the whole length with no traffic.
- The Donauinselfest - a free June festival among the largest in Europe.
When to go
May to September; late June for the festival. Half a day.
Practical notes
The festival brings enormous crowds and the island is packed. Water quality is monitored and generally good but is published for a reason. The middle section is loud and commercial.
Nearby
The UNO City and Donauturm are on the north bank; the city centre is a short U-Bahn ride.
Key facts
Source: Wikidata, item Q23249, read on 18 October 2026.
What to pack for Danube Island
Chosen from what this place is for. Tap a kit for the full checklist.
- Reef-safe sunscreen - High SPF that will not bleach the coral you are swimming over. Find on Amazon
- Comfortable walking shoes - Sightseeing means kilometres of pavement and cobbles daily. Find on Amazon
- Quick-dry towel - A microfibre towel packs small and dries in minutes. Find on Amazon
- A slim anti-theft daypack - Zips that close properly; keep it in front in crowds and on transit. Find on Amazon
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Opening times, ticket prices and seasonal closures change - check the official source before you go: official site.



