Château de Sainte-Suzanne was a property of the lords of Beaumont, viscounts of Maine, and was built in the 11th century. The most famous event of castle was when it succesfully repelled the conquer attempt of William the Conqueror in 1083-1086.
Installed on a rocky outcrop dominating the Erve valley, the Château de Sainte-Suzanne consists of a triangular courtyard made up of eleven round and square towers, a moat separating it from the medieval town or even a quadrangular keep with three levels near the drawbridge.
As for the dwelling, it reveals an architecture typical of the Henri IV period, at the transition between the Renaissance and the Classical, with a steep roof made of slates from Angers, a facade with bays or even pediments covering the skylights.
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.