The main cathedral with its 95 m high tower, built in Gothic style in the 14th century. From 1562 to 1792, emperors of the Holy Roman Empire were crowned in the cathedral. It is possible to ascend the tower to a platform at 66 m height, affording excellent views over the city. For this, you will need to enter via a separate entrance at the southern side of the cathedral and climb over 300 steps in a narrow winding staircase.