Wasserturm Sindelfingen-Steige, Water tower in Sindelfingen, Germany.

The Wasserturm Sindelfingen-Steige is a 65.60-metre water tower built in 1960 in Sindelfingen, Baden-Württemberg. Its shaft rises to a water tank, and since 1988 a UKW broadcasting antenna has been mounted at its top. The observation platform that the tower originally also offered has been closed for years.

The tower was completed in 1960 as a 65.60-metre water tower for Sindelfingen. Since 1988 a UKW broadcasting antenna has sat on its top, transmitting Radio Energy (Böblingen, Calw, Freudenstadt) at 2 kW ERP on 104.3 MHz, after earlier use by R.TV-Radio and Radio BB.

The tower marks an era when Sindelfingen expanded after World War II and needed new infrastructure to support its growing population. Today it represents how practical industrial buildings became part of the town's visual identity.

The tower is located in a residential area and remains visible from public streets, but visitors cannot access the interior or climb to the top. The best time to photograph it is during daylight hours when lighting shows the concrete structure clearly.

Since 1988 an FM antenna on the tower's tip has carried the Radio Energy programme (formerly R.TV-Radio and Radio BB) for Böblingen, Calw and Freudenstadt, at 2 kW ERP on 104.3 MHz. The 65.6-metre tower also once had an observation platform, closed for years.