The Swabian Castle in Oria is a wonderful construction built between 1225 and 1233 at the behest of Holy Roman Emperor Frederick II. Over the centuries, it has been inhabited by princes, knights and noblemen. It has a triangular plan and is characterised by three towers called Quadrata (Square), Del cavaliere (of the knight) and Del Salto (Jump): the first one was built during the time of Frederick II, while the other two under the Angevin domination.
According to a local tradition, the foggy atmosphere which shrouds the castle is not just a natural phenomenon, but it recalls something which happened during the construction of the castle, known as Oria Fumosa, foggy Oria. A must-see is the castle at sunset, with an amazing picture-postcard view, which can be admired from any place in the town.
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.