Alzey Castle, constructed in the 13th century, was the residence and headquarters of the district administration. The castle of Alzey was a favoured place of residence for the Palsgraves during the time of both Ruprechten, Ruprecht ll and Ruprecht lll. who was King Ruprecht I of Germany from 1400 - 1410.
In the 15th and 16th centuries the castle was built into a representative castle complex which was badly destroyed during the Palatine War of Succession. As a result of the romantically inspired castle restoration movement of the 19th century, the ruin was rebuilt and restored to its historical splendour at the beginning of the 20th century. Since this time it has been used as the district court house.
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.