On the modest rise of the Horsteberg hill, the Cathedral of Saint Paul stands as a physical record of Münster’s survival. Its exterior walls, built from the warm, buttery yellow of Baumberger sandstone, support a vast, oxidized green copper skin. This structure is the third church on this ground. Saint Liudger established the first, a Carolingian collegiate church, around 805. In 1225, Bishop Dietrich III von Isenberg laid the foundation stone for the current building, which Bishop Gerhard von der Mark consecrated on September 30, 1264.

Walk through the southern porch, known as the Paradise, and the air cools. Inside, the cathedral merges Romanesque and Gothic forms. The massive 1192 westwerk, with its twin towers topped by copper pyramids, anchors the western end. Near the entrance, the giant stone figure of Saint Christopher, carved by Johann von Bocholt in 1627, holds a wooden staff that caretakers still replace periodically.

In the eastern transept, the Renaissance astronomical clock, built between 1540 and 1542 by mathematician Dietrich Tzwyvel, tracks the heavens. Its hands turn counterclockwise across a twenty-four-hour face, mimicking the sun's actual path. At noon, a carillon plays as metal figures of the Three Magi emerge to bow before the Virgin Mary.

The cathedral’s stones also carry the scars of modern trauma. Allied bombs in World War II shattered the late-Gothic western portal of 1516. During the post-war reconstruction, Bishop Michael Keller approved a stark, modern design by Fritz Thoma for the ruined west wall. They installed twelve round windows in a circle, with four more inside. Local citizens, startled by the modern design, nicknamed it "God's rotary dial."
Deep in the Ludgerus Chapel lies the tomb of Clemens August Graf von Galen, the bishop who publicly opposed the Nazi regime. In the treasury, the Pauluskopf—a gold-and-silver reliquary from 1040—still holds the skull relics of Saint Paul. From the rhythmic chime of the clock to the cold gleam of medieval gold, these objects remind us that the past is not simply remembered here—it is touched.