Mozartturm, Cultural heritage tower in Darmstadt, Germany.

The Mozartturm stands at Rheinstraße 111 in Darmstadt, a 1936 air-raid and anti-aircraft bunker built in the Dietel construction method, a development of the Zombeck type patented in 1937. Its concrete mass rises above the street, and since 2002 a stainless-steel turret platform carrying a mobile-phone mast crowns the roof.

The building was constructed in 1936 for military purposes and served as an air raid shelter and anti-aircraft station during the war. After 1945 it was repurposed, marking a complete shift in its function.

The tower's name dates from the 1970s, when the privately owned building housed a Mozart archive with a recording studio and an events room. That use gave the former bunker its present name. Today the tower is closed to the public, so the musical chapter is not visible from outside.

The tower is normally closed to visitors but opens once a year during the Open Heritage Day. Those interested in seeing inside should plan around this annual event or look for special programs.

The 1945 capitulation of Darmstadt's garrison was signed inside the Mozartturm, not announced publicly; the tower had already directed firefighting and rescue during the British air raid of 11–12 September 1944. Since 2002 a stainless-steel turret with a mobile phone mast has stood on the roof.