The church of San Giuliano is one of the oldest places of worship in Erice, dedicated to San Giuliano, martyred in 254 AD. Its construction was commissioned, according to tradition, by the Norman Grand Count Roger in the 11th century, but it has been a place of worship already during the first centuries of Christianity. It was rebuilt between 1612 and 1615, more imposing and with three naves. In 1927 it was closed due to a collapse and reopened after almost 80 years in 2005.
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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.