Nussdorf weir and lock

Designed by Austrian architect Otto Wagner, The weir and lock were built following the adoption of a new law in July 1892, which also authorised the construction of the Vienna Stadtbahn and the transformation of the Donaukanal into a winter harbour.

Wilhelm von Engerth's Schwimmtor provided satisfactory protection from floating ice, but it only gave a very limited degree of control over the amount of water in the canal.

Otto Wagner was employed by the transport commission for the project; the architectural plans for the weir and the Schemerlbrücke, the adjoining buildings and (possibly) the lock are the work of Sigmund Taussig.

These lions are the work of Rudolf Weyr and were later the model for the logo of Gräf & Stift, an Austrian automobile producer.

The needle dam was replaced with a modern segment weir during improvements carried out on Vienna's defenses against flooding between 1971 and 1975.

Between 2004 and 2005, the Nussdorf power station was built downstream of the weir and lock without any visible changes to the historical appearance of the area.

The power station's 12 turbines produce around 28 gigawatt hours per year and thus provide electricity for approximately 10,000 households.

On 25 November 1966, the City of Vienna announced that the Stadtrat Kurt Heller had officially opened the fully mechanised lock.

The three- to four-storey administration building that stands near the weir and lock was designed by Otto Wagner and built in secessionist style.