A landmark of Mayen is the Clemens Church in the center of the city. In the middle of the pedestrian zone is the church with the crooked, twisted steeple. According to legend, the devil twisted the corkscrew-like tower. However, it was a construction error of the carpenters. The Clemens Church is one of the first Gothic hall churches on the Middle Rhine. The church was first mentioned in 1296, and between 1350 and 1430 it was rebuilt into the Gothic hall church of the Augustinian monastery. Destroyed in 1944, then rebuilt.