Hahnen Gate

The Hahnentorburg is one of the few surviving gatehouses of Cologne's medieval city wall and once guarded the western entrance to the city. Built in the early 13th century as a twin-towered gate, it stood on the road to Aachen and served as the entry point for kings after their coronation ceremonies. In the Middle Ages, the complex was also used as a prison, where the itinerant preacher Adolf Clarenbach, among others, was held. The gate's name probably derives from a former landowner or from a word meaning "wooden gate," which points to the forested areas surrounding it.

After the city acquired the fortification grounds in the 19th century, the gatehouse was restored around 1890 and converted into a historical museum. Replicas of medieval siege engines could be seen on the tower roofs. The complex suffered heavy damage in World War II, and the left half-tower was largely destroyed. Today the building houses the EhrenGarde der Stadt Köln carnival society as well as an event space available for rent. The adjoining square has been called Rudolfplatz since 1883 and provides a quiet setting for the historic structure.