St. Mariä Geburt

The Marienkirche was built around 1200 as a three-aisled, originally flat-roofed basilica, vaulted around 1240. A choir with a five-eighths apse was added in the 14th century, and the nave was raised around 1400. Over several 15th-century campaigns the church took on its present form as a hall church, culminating in the sacristy built on the choir's north side in 1482–90. A major restoration between 1854 and 1876 already reduced the furnishings somewhat.

The tower is articulated with pilaster strips, blind arcading, and paired twin sound openings beneath a slate pyramidal spire. A drip course runs around the exterior of nave and choir, while the buttresses carry lean-to roofs and the ambulatory individual hip roofs. Inside, cross-ribbed vaults rest on rectangular arcade piers whose core survives from the 1240 rebuilding, incorporating reused capitals and masonry. The ambulatory, narrower than the aisles and covered with alternating triradial vaults, causes the piers to obstruct sightlines into the choir chapels—unlike at St. Lambertus in Düsseldorf or St. Peter in Rheinberg.

The tower-like sandstone sacrament house was created by Konrad Kuyn in 1460/61, its two-tiered tracery spire rising from a blocklike base. Most of the rosary scenes in the aisles date from the Hertel & Lersch workshop (1893–1900). Heinrich Dieckmann designed stained glass beside the west tower in 1935–37, while Wilhelm Geyer created the 1967 choir windows on the theme of following Christ. The north ambulatory holds a badly damaged mural of Franciscan saints, its renewed inscription dating it to 1453.