Raymontpierre Castle is situated on a spur on the north slope of Mont Raimeux. The castle was built around 1594-1596 by Georges Hugué de Raymontpierre, the châtelain of Delémont. His father had received the land as a fief from the Bishop of Basel in 1576. Between 1623 and 1809 it was owned by the Staal family, a noble family from Solothurn. The fortified mansion was eventually converted into a farmhouse. The Buehrle family bought it in 1941 and restored it in 1949.
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.