The oldest parts of the Norantola Castle were probably built in the 12th century for a local noble family. In 1248 Locarnus de Norantola is mentioned in a record and in 1295 Petrus de Norantola is mentioned. However, by around 1300 the castle was owned by the powerful Counts of Sax/Misox and the Norantola family vanished from historical records. In 1324 Ugolinus von Sax was listed as the owner of the castle. In the early 14th century, the original castle was completely rebuilt. The old ring wall was topped with swallowtailcrenallations. A new tower was built on the wall. The north wing, with apartments and a throne room, and a south wing with stables were added. The original palas had a gallery added and became the east wing.
The rulers of the castle became a cadet branch of the Sax/Misox family, known as Sax-Norantola. In 1439 the local court ruled in favor of the Sax-Norantola family during a family conflict. However, in 1452 Count Henri von Sax-Misox signed an agreement with the residents of the valley that overturned all agreements and traditional rights between Sax-Norantola and the residents. In 1480 Count Peter von Sax and Gian Giacomo Trivulzio quarreled over Mesocco, which eventually led to a war. It appears that the Sax-Norantola family supported Trivulzio and his ally, the Duke of Milan. After 1480 either Trivulzio or the Duke of Milan helped reinforce that castle. However, it was ineffective because in 1483, during fighting between the Duke and the Count, Norantola Castle was burned by Sax-Misox troops. The castle was never rebuilt and in the 16th century the Sax-Norantola family lived in Bellinzona.
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.