The Basilica di San Calimero is a church in Milan, northern Italy. Its name refers to Saint Calimerius (died 190 AD), an early bishop of the city. It dates from the 5th century but was almost completely rebuilt in 1882 by the architect Angelo Colla in an attempt to restore it to the 'original' medieval structure.
What remains of the ancient church include: the 16th century crypt, with a noble frescoed vault by the Fiammenghini; a small fresco with the Madonna and Two Female Saints (15th century, attributed to Cristoforo Moretti) in the apse; a Crucifixion by Il Cerano, and a noteworthy Nativity by Marco d'Oggiono. Other medieval frescoes are in the annexed sacristy.
The crypt also houses Calimerius' relics and a pit located in the same place in which the former's bones were found in the water.
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.