Pozzol Groppo castle was built in the late 12th century on the site of a Roman watch tower. It was restored in the 16th century by the powerful Malaspina noble family, who owned the castle until 1889.
The imposing building preserves inside a beautiful courtyard with a medieval well and sumptuous rooms with fireplaces, wooden ceilings and fresco decoration, keeping alive the prestige of an illustrious past. Today it is not open to the public.
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.