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:Visby Cathedral (also known as St. Mary’s Church) is the only survived medieval church in Visby. It was originally built for German merchants and inaugurated in 1225. Around the year 1350 the church was enlarged and converted into a basilica. The two-storey magazine was also added then above the nave as a warehouse for merchants.
Following the Reformation, the church was transformed into a parish church for the town of Visby. All other churches were abandoned. Shortly after the Reformation, in 1572, Gotland was made into its own Diocese, and the church designated its cathedral.
There is not much left of the original interior. The font is made of local red marble in the 13th century. The pulpit was made in Lübeck in 1684. There are 400 graves under the church floor.