The Basilica of Saint Maternus (Basilique Saint-Materne) is a minor basilica in Walcourt. According to legend, an oratory was founded here by Maternus of Cologne (c. 285–315), who also carved a Madonna to replace an earlier pagan idol. The church does in fact contain a wooden Madonna, albeit from 950–1020, but still one of the oldest preserved Marian devotional statues in Western Christianity.
The church was consecrated in 1026. The presence of the Madonna and its allegedly miraculous properties led to the development of the church into a pilgrimage site during the Middle Ages. Subsequently, the church was rebuilt into the Gothic edifice seen today between the 13th and 16th centuries.
It contains a decorated rood screen from 1521, donated by Emperor Charles V, and decorated choir stalls from the early 16th century. The church has been damaged by fire and war on several occasions, most recently in May 1940 during World War II. Since 1941 it has been a listed building, and since 1950 classified as a minor basilica.
References:The Church of St Donatus name refers to Donatus of Zadar, who began construction on this church in the 9th century and ended it on the northeastern part of the Roman forum. It is the largest Pre-Romanesque building in Croatia.
The beginning of the building of the church was placed to the second half of the 8th century, and it is supposed to have been completed in the 9th century. The Zadar bishop and diplomat Donat (8th and 9th centuries) is credited with the building of the church. He led the representations of the Dalmatian cities to Constantinople and Charles the Great, which is why this church bears slight resemblance to Charlemagne's court chapels, especially the one in Aachen, and also to the Basilica of San Vitale in Ravenna. It belongs to the Pre-Romanesque architectural period.
The circular church, formerly domed, is 27 m high and is characterised by simplicity and technical primitivism.