The Château de Dinan consists of a keep and gate, which are part of the 2,600 metres of medieval ramparts which still surround the old town. The keep is called Donjon de la duchesse Anne (Keep of the Duchess Anne), and stands 34m high near the Saint Louis gate. John V, Duke of Brittany built the keep in 1382-1383. The keep is formed by a union of two tall circular towers; a moat and drawbridge divides the keep from the outside of the ramparts as well as from the inside of the city, providing a stronghold both against outsiders and from the townspeople themselves. Extensive machicolations overhang the wall head providing defensive coverage of the base of the tower. Château de Dinan is owned by the commune and houses the local museum.
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.