The Chiesa degli Ottimati history is documented as early as the 10th century. The present name derives from a Norman confraternity that rebuilt the church, and dedicated it to the Virgin of the Annunciation. The Ottimati were a congregation of nobles founded by the Normans. Over time, these included the Filocamo, Griso, Altavilla and Borboni.
The original layout appears to have been a Greek cross, with multiple domes. The Normans under Roger II, built a church on top, eliminating many of the domes. On September 3, 1594 the church was damaged and burned during a sack of the town by Saracen raiders. In 1597, the church commissioned a new painting of the Annunciation by Agostino Ciampelli.
By the 18th century, the church was affiliated with the Jesuits, and a school was adjacent. With the suppression of the Jesuits in 1767, the church fell empty. It was damaged by earthquakes in 1783 and 1908. The church rebuilt after 1908 moved from the original location, and was completed in 1933, using a design by Pompilio Seno, who adopted a neo-Byzantine style with Arab-Norman elements. Some elements from the destroyed Norman basilica of Santa Maria di Terreti were used.
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.