The Château de Spesbourg is a ruined castle that dominates the valley above the village of Andlau. The castle was constructed between 1246 and 1250 by Alexander of Stahleck-Dicka, Vogt to Andlau Abbey. In 1386 it became the property of the family von Andlau. In the 16th century angry locals set fire to the castle after one of the lords seduced a village girl. The castle fell into ruin after the Thirty Years' War.
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.