The Priamar Fortress is a fortress occupying the hill with the same name above the port of Savona. The fortress was built in 1542 by the Republic of Genoa on a promontory where in medieval times was the nucleus of Savona, by design of architect Giovanni Maria Olgiati. However, traces of pre-Roman, Roman and Byzantine presences in the site have been excavated in the past centuries, and are now on display in Savona's Archaeological Museum.
In the 17th century the fortress received bastions designed by the Spanish Royal engineer Domenico Sirena, and in the 18th century were added the commissar's, officers' and Sibilla palaces. In order to create space for the new structures, edifices of the medieval Savona, including its cathedral (built in the 9th century over a pagan temple), were demolished.
In 1746, in the course of the War of Austrian Succession, it was stormed by the Piedmontese grenadiers. In 1820, after the annexion of Liguria to Piedmont, it became a prison. During the Risorgimento, Italian patriot Giuseppe Mazzini was jailed in the Priamar Fortress.
The fortress, which could house up to 500 prisoners, remained Italy's main military prison until 1903, when its role was taken by the castle of Gaeta.
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.