West portal of St. Paul's Cathedral in Münster, in 1900 and today.
The original Portal in late gothic style fell victim to a bomb in World War II and was not built in this form again. The new design of Bishop Michael Keller was the subject of heated discussions, but ultimately came out on top.
After a design inspired by the architecture of the 1950s by Fritz Thoma, twelve round windows arranged in a circle were installed in the western wall, with further four arranged in a square in the middle. By the population, this configuration is often derisively called "Keller-Fenster" (cellar window, in reference to owner Bishop Keller) or "God's dial".