Isolated on a hummock surrounded by terraced orchards in the artificial basin of Santa Giustina, Cles Castle was built as a fortification to control the Roman road, which used to link the two banks of Stream Noce via a wooden bridge. The original ancient centre was composed of the 'Age-old Tower'. Prince-Bishop Bernardo Clesio had the castle expanded and given a Renaissance style look.
At the beginning of the 16th century the castle was attacked, during the so-called Peasant Rebellion, and in 1825 suffered a severe fire, yet it still boasts indoor some 16th century frescoes ascribed to Marcello Fogolino.
Now property of the Barons of Cles, the castle is closed to the public except for special summer events.
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.