Sint-Rochus Tower Aarschot

This medieval heritage building on the Grote Markt, which has been listed as a monument since 1938, was built in ironstone and served as a torture chamber and prison, later as a police station and as a tourist office.

The Sint-Rochustoren is the only remnant of the medieval town hall that was destroyed in 1578 in the Belgian town of Aarschot and is located on the Grote Markt. The Gothic tower was built around 1300 in ironstone in large and small contexts. It has three floors and a corner turret in overhang. A statue of Saint Roch has been placed in the niche on the street side, together with Our Lady, an important saint in the city. The building was used as a watchtower by the guilds, later it was used as a police station and tourist office. On March 25, 1938, the tower was classified as a monument.
Source: Wikipedia

After the destruction of the town hall during the sack of Aarschot in 1578, the town council continued to meet on the Grote Markt in a tower that had been spared by the fire. It was not until 1719 that the city built a new town hall against St. Roch's tower, which has since served as a safe repository of the urban liberty label and other important municipal archive documents.[3]On January 31, 1920, the city council decided to demolish the adjacent town hall, which had been burnt down by the German troops in the First World War, and at the same time restore "the old Spanish Sint-Rochus tower". A war memorial was also erected there in honor of the fallen soldiers and murdered civilians.[4]Since July 11, 2005, the Sint-Rochustoren has been opened to the general public by the Order of the Hagelanders, a reenactor association from Aarschot.
nl.wikipedia.org/wiki/Sint-Rochustoren