Bergkvara Castle had originally five floors and four corner towers. It was probably built by Arvid Trolle around 1470-1480. It was owned by his family 150 years and played an important part as a political and economical power centre. Nils Dacke, the leader of the famous peasant revolt, besieged the castle in 1542 and then attacked and burned it to the ground. The castle was left to decay until in 1794 count Arvid Eric Posse build a new main building next to the old ruins.
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.