Château de Quintin was mentioned as 'castellum novum' in 1202 and it was probably a fortified manor built in the late 1100s by Alain de Penthièvre. Geoffroy I Boterel built the first actual castle in the middle 1200s. it consisted of a moat, four gates, curtain walls and towers. The castle was badly damaged in the Wars of Religion (1590s).
The next castle was built as a living residence in 1643 and restored in 1785-1790. During the Great Revolution Château de Quintin was used as a prison. Since 1935 it has been owned by Bagneux family.
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.