Kamp Abbey was the first Cistercian monastery founded in German territory. It was founded in 1123 by Friedrich I, Archbishop of Cologne, and settled from Morimond Abbey. As the first Cistercian foundation in the region it attracted great endowments and became very wealthy and powerful. It was extremely active in the foundation of daughter houses.
Kamp was largely rebuilt in the 15th century but suffered extensive damage in the Reformation. The abbey was abandoned early in the Cologne War (1583–1588); many of the monks went to the city of Neuss, where they underwent the siege and bombardment of July 1586; another portion went to Rheinberg, which was the focus of three battles to take the city, the last in 1589. The abbey itself was destroyed by Adolf von Neuenahr in 1586. A small group of monks returned under abbot Polenius (1636–64), but re-construction did not begin until 1683, and the community did not return fully until 1700.
The abbey was secularised during the German mediatisation of 1802 and the buildings were sold, and mostly demolished. The church was converted for use as a parish church.
Between 1954 and 2002 a Carmelite community resided on the remains of the monastery. The last monk left the monastery in 2010.
The abbey site is still known for the terraced gardens and the orangeries.
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.