Alte Kirche, Romanesque church building in Kellen, Kleve, Germany.

Alte Kirche is a Romanesque church building in Kellen with solid stone walls, rounded arches, and carefully crafted masonry. The structure displays classic features of Romanesque design, including verticals and balanced proportions.

A document from 752 records the Frankish noble Adalard donating his court cellina to the Peterskirche in Rindern. The first secure written mention of a church at Kellen is a papal charter of 6 May 1069, in which Alexander II confirms the Echternach abbey's dependent congregation in Kennele. A memorial stone for the layman Grimoldus, dated to the second half of the 10th century, is kept in the tower.

The church is dedicated to Saint Willibrord, the Frisian missionary who became bishop of Utrecht after receiving the papal mission in 691. Inside the tower, a memorial stone for the layman Grimoldus, dated to the second half of the 10th century, records his death on 3 June and suggests burial around the church.

The church stands on a raised sandy knoll about 15 metres above sea level on Kreuzhofstraße, on the site of Kellen's former village centre until the early 20th century. The elevation once shielded it from Rhine floodplain flooding. Look for the memorial stone and the Neuss toll privilege inside the tower.

Inside the tower is a memorial stone for the layman Grimoldus, inscribed "III:NON:IVNII OBIIT GRIMOLD LAICUS" (he died on 3 June). The building historian Günther Binding dated it to the second half of the 10th century, which suggests a church stood here after 950. The stone was probably reused as building material and set so that its inscription stayed legible.