Château de Sauveterre was constructed at the end of the 13th century by Edward I of England on one of the principal routes between Périgord and Agenais. During the Hundred Years' War, it became a centrepiece in the Anglo-French war of attrition. It was burned in 1789 during the French Revolution.
It was bought by the aviator Jean Mermoz in 1936, less than a year before his death. He had seen the castle from the air. After his death, the castle was abandoned and became the property of the commune until it was sold in the 1980s.
The castle in its entirety, as well as its grounds and moat, have been classified as historical monuments since 19 September 2003. It is privately owned.
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.