Alte Donau is a charming spot to visit if you want to be near the water. Enjoy a quiet stroll along the river and keep an eye out for bird life.
When you've spent a bit of time at this flowing body of water in Donaustadt, why not make your way to Schönbrunn Palace, Vienna State Opera, and Hofburg Imperial Palace? They're close to Alte Donau and also popular with tourists.