During the 12th century, there appears to have been a tower and wooden fort at the site of the present Erpeldange castle. In the 13th century, Frederic and Gerard d'Erpeldange, the first lords of Erpeldange, built a fortified stone castle guarding the valley at the point where the River Sûre meets the Alzette. The property passed successively into to the hands of the Counts of Vianden, and the Brandenburg-Outscheid and von Moestroff-Kerpen families.
Through marriage, the Gondersdorf family inherited the castle and in 1630 transformed it into a luxurious residence for their daughter. In 1677, it was inherited by Charles François baron de Failly de Sancy and Marie Marguerite de Giraldin. By that time, it was no longer of any military value as a quiet park had replaced its defences. Abandoned by the Prel family in the 19th century, it was used as a rectory. During the Second World War, the castle was damaged as a result of its use first by the Germans and then by American troops.
The castle changed hands a number of times until it was acquired by the State in 1983. The commune's administrative offices have been housed there since 1987. The building still contains two fine Renaissance fireplaces.
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.