The Basilica della Santissima Annunziata del Vastato construction was begun by the Franciscans in 1520 in a site previously occupied by the small church of Santa Maria del Prato, belonging to the Humiliati. Works were however halted in 1537, and in 1591 the Lomellini family continued the reconstruction, directed by Taddeo Carlone.
In the early 17th century the rich Baroque decoration was executed, with Andrea Ansaldo in charge of completing the works, and in particular the dome. The current Neoclassicist façade dates to 1830-1840s, designed by Carlo Barabino. The church was damaged by Allied bombings during World War II.
The decoration was employed the major Baroque studios and artists in Genoa in the 17th century.
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.