Built in the 12th century in mudejar style, the Castilnovo castle is conserved in good condition. It has a rectangular plan, with six round and square towers. It was rebuilt in the 14th - 16th centuries and again between the 19th and the 20th centuries. The present castle is thought to have been built on a previous structure, probably a small fortress. Trapezoid ground plan, with six round and rectangular turrets of brick and masonry. Arched, parted windows. Rectangular turrets, one if which leads inside the building.
Particularly noteworthy is a corner turret reminiscent of another turret in Monteagudo de las Vicarías. The main features of the building are 14th century.The southern section, with its wooden gallery, dates back to 1861, and the present stone yard was built in the 20th century.
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.