Kortenberg Abbey was a Benedictine nunnery. The foundation, dating from before 1105 and traditionally dated 1095, was confirmed by Odo of Tournai in 1110.
The abbey was an important location in the constitutional history of the Duchy of Brabant, as it was where the Charter of Kortenberg was confirmed and where the council met that was instituted to oversee the charter's implementation.
Kortenberg was suppressed in 1798. It is now a diocesan retreat centre.
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.