Château de Freundstein is a ruined castle in the commune of Goldbach-Altenbach. The castle was recorded in 1297. It ownership was shared between the abbey at Murbach and the bishops of Strasbourg. It waas given as a fiefdom to the Waldner family who still own it. In 1441, it was attacked by the Mulhouse and in 1525 by rebellious peasants. It was restored in the 16th century, but abandoned shortly afterwards. The ruins were used as a military observatory during the First World War. The ruins consist of sections of wall from the high castle, with loopholes and more recent openings.
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.