St. Remigius, Romanesque church building in Wittlaer, Düsseldorf, Germany

St. Remigius is a Romanesque basilica in Wittlaer whose central nave still shows its origin as a single-nave hall church. The square transept matches the width of the three-story west tower, and the eastern apse is covered by a ribbed vault with three round windows. The clerestory carries eight blind arcades, each second one holding a round-arched window.

The structure started as a single-nave church in the 12th century but was expanded into a three-nave basilica during the 13th century, with records first mentioning it in 1144. This transformation reflects how the community's needs grew over time and drove architectural changes.

The church is dedicated to Saint Remigius, Bishop of Reims, whose feast day is 1 October. Inside, the 1920s and 1930s redecoration under pastor Franz Vaahsen brought works by Ewald Mataré — the crucifixion group, altar cross and tabernacle — plus windows by Jan Thorn Prikker (1926–27) and a 1937 window by Heinrich Nauen and Wilhelm Teuwen.

The church stands in Wittlaer, a northern district of Düsseldorf; the three-story tower with its round-arch friezes marks the entrance front on the west. The nave and side aisles are entered beneath the tower, and the square transept leads east to the rib-vaulted apse with three round windows. Look up at the upper-story sound openings of the bell chamber.

The church's 1998 organ, built by Josef Weimbs of Hellental, is a purely mechanical instrument with 14 stops on slider chests. Its couplers are II/I, I/P and II/P. The 15th-century furnishings include a processional cross, while the baptismal font dates from around 1200.