Hungerturm, Medieval prison tower in Mindelheim, Germany.

The Hungerturm, also called Gefängnisturm, is a cylindrical brick tower covered in plaster, 34 metres high, in Mindelheim. Its oldest lower sections date from the second half of the 14th century, while the upper part was built around 1500. In 1834 it was incorporated into the Fronfeste building. Near the roof line on the southeast side, rows of low blind arches with three round arches each mark the facade, and above them five storeys have small barred round-arched and rectangular openings.

The oldest sections of the tower, in its lower part, probably date from the second half of the 14th century; the upper part was built at the end of the 15th or beginning of the 16th century. In 1834 the tower was incorporated into the Fronfeste building, the town's jail. It was renovated around 1960.

The tower carries several names: Gefängnisturm (prison tower), Hungerturm (hunger tower), Malefizturm and Raubturm. These names record its use as the town jail, where the town authorities held prisoners. In 1834 it was built into the Fronfeste, the town's detention building, so the tower and the prison beside it read as one structure.

The tower stands at the Grabenseite, where it was incorporated into the Fronfeste building in 1834; the cylindrical brick shaft rises 34 metres above that structure. It is a listed monument, so it is viewed from the surrounding streets rather than entered. The tower was renovated around 1960.

The tower is also called Malefiz- or Raubturm, names that point to its use as a jail rather than to hunger alone. Its cylindrical brick shaft was plastered and, in 1834, built into the Fronfeste, the town's prison building, which still shapes how the tower is seen from the street.