According to tradition, San Michele Church would have been built by the Lombards, who venerated the archangel St Michael, although its existence is documented from the 8th century, prior to Lombard rule of Cremona.
In the 11th century a new basilica was built. In the 13th century it received a new campanile (belfry), and the naves were vaulted with pointed arches. In the crypt are elements dating to the early Middle Ages crypt, one of which attributed to the Lombard age. The apse, as well as the other church of San Vincenzo in Cremona, resembles that of the Nonantola Abbey.
The church includes a statue portraying 'St Michael Subjugating the Beast' and located to the right of the high altar.
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.