[2][3] The Old Danube is home to a diverse ecosystem, with over 20 species of fish inhabiting its waters, including wels catfish, pike and zander.

[4] Conservation efforts to reintroduce endangered plant species have greatly improved the ecological diversity of the Old Danube.

[5] Today, the Old Danube is a popular leisure and bathing area close to the city center, easily accessible via Vienna’s subway system.

The beaches are freely accessible; however, due to the lack of amenities like changing cabins, these facilities are primarily utilized by locals.

It is a good area for beginner sailors, although the surrounding high-rise buildings, such as those in Donau City and UNO-City, can create unpredictable winds.