Plavecký Castlee was built as a royal frontier castle between 1256 and 1273. Until the 16th century it was owned by Counts of Jur and Pezinok. In the second half of the 16th century the castle was rebuilt into a Renaissance style with the lower court. Gradually it was again fortified and maintained during the 17th century (new cannon towers were added then). In 1706 the castle was damaged the imperial army that conquered it from the rebels.
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.