The history of Laval Dieu begins in this place formerly called “la Bouche de Semoy” when the Archbishop of Reims, Hincmar, had a chapel built in 867, that was dedicated to Saint Rémy and entrusted it to the secular canons from the Braux Collegiate Church with a view to evangelising the region. Twelve canons from Prémontré arrived in the month of June 1128, at the beginning of the Semoy Valley which then became for evermore the “Vallis Dei”, the Vallée de Dieu, Laval-Dieu. Right from the moment it was founded Laval Dieu Abbey received as alms or in exchange for prayers, the inherited lands in Monthermé and further beyond in the neighbouring areas situated in the Empire, such as Auton wood in the Roc la Tour direction, owned by the Orchimont family. That is how Monthermé became an entity, a village, a seigneury whose lord of the manor was the Abbot of Laval Dieu. The inside of the church’s walls is entirely covered with oak panelling up to a height of 3.50 m that was installed in the early years of the 18th century.
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.