Barry Castle was a fortified manor house built on the site of an earlier Norman structure. It was raised by the powerful de Barry family, who played an important role in both the conquest of South Wales and Ireland. The structure was ruinous by the sixteenth century.
By the late 13th century the castle had two stone buildings on the east and west sides of a courtyard, but nothing now remains of these above ground. Early in the 14th century the castle was strengthened by the addition of a large hall and gatehouse on its south side, and the ruins of these can be seen today.
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.