Wasserturm Bardenberg, Water tower in Bardenberg, Würselen, Germany

Wasserturm Bardenberg is a brick tower 47 metres tall whose six stepped buttresses give it a star-shaped ground plan. Its Jugendstil tower helm was originally slate-covered and was clad in copper sheeting after the Second World War, producing the green cap seen today. The water tank in the upper third is a Barkhausen container holding about 500 cubic metres.

Built from 1909 to 1911 by the waterworks of the Aachen district, the tower reduced pressure from the high Eifel supply and secured drinking water from soft reservoir water. It was listed as a monument on 19 November 1982. Its intended use ended in 1985, when an electronically controlled ring piston valve took over, and it has been privately owned since 1992.

The tower stands alongside St. Peter and Paul Church as one of two prominent structures visible from great distances across the Bardenberg landscape.

The tower can be viewed from the outside and is visible from various vantage points across Bardenberg. Its location is easily accessible and offers good photography opportunities from different angles.

The tower's nickname, the "green cap", comes from the copper sheeting added after World War II; before that the Jugendstil spire was covered in slate. The tank inside the upper third is a Barkhausen container holding about 500 m³.