The castle of Suvero was built in the 12th century by the Malaspinadi Villafranca on a hill overlooking the village. During the 15th century it was assigned to the Campofregoso, after Genoa had conquered the territories of the Malaspina. At the behest of King Louis XII, the Genoese returned it to the original owners. After the death of Spinetta Malaspina, lord of Suvero, it became an independent fief assigned to Rinaldo Malaspina, who probably built the castle.
There were then several lords of the Malaspina family: some of them shined for their governmental talent, while others provoked dissatisfaction among the subjects. In 1600 the villagers of Suvero decided then to submit to Spain and to Tuscany, but in the end they always returned under the rule of the Malaspina. After the beginning of the Renaissance the castle lost its defensive function and became definitively a residence. For over 200 years it was the residence of the lords of Suvero and was rarely involved in battles.
The current structure, which probably stands on a pre-existing medieval building, is trapezoidal with three fortified corners and impressive fortified towers. On the western side there is a circular fortified tower. In the 19th century the eastern fortified tower collapsed, and in 1921 the southern one was destroyed by the earthquake. Both have been restored.
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.