Both of the steeples consist of three lower, undivided storeys and several Freigeschosse. The two lower storeys are simple and block-like. The steeples’ upper storeys soar up the tracery gallery. As those were not constructed simultaneously, they differ slightly in their outer appearance. In contrast to the southern steeple, the octagonally cross-sectioned steeple and the steeple topping attach only over a rectangle storey at the northern steeple. Comparable to the Freiburger Münster, lank Fialentürme project at the corners of the octagons.