Wiener Wasserwelt, Water well system in Rudolfsheim-Fünfhaus district, Vienna, Austria

Wiener Wasserwelt is an art project featuring water fountains and sculptures stretching from Meiselmarkt along Meiselstraße to Kardinal-Rauscher-Platz. The system connects multiple artistic installations into a cohesive landscape within the public space.

The project emerged in the 1990s as part of the U3 subway extension and resulted from collaboration between architects and visual artists. The installation was later renovated and partially redesigned to create new seating and green spaces.

The name comes from the water fountains and installations that define the streetscape and bring neighbors together. These elements create outdoor meeting points where people gather and watch the water features in action.

The area is easy to explore on foot along the street and can be visited from multiple starting points. The water features are best viewed on sunny days when light plays across the fountains.

The Lebensbaum by Hans Muhr, called the "water sculptor", stands at the eastern end of Kardinal-Rauscher-Platz near Huglgasse. Its photovoltaic panels are part of the coloured sculpture itself, so the work combines a fountain with a solar installation. The other fountains on the square survived the 2017 redesign, while those along Meiselstraße were removed.