Merode estate was first time mentioned in 1170 and it was originally built by ministrial Werner from Kerpen. The first mention of castle dates from 1263. The current appearance was created mainly by Marshal Jean Philippe Eugène de Merode-Westerloo in the early 18th century. It was partially destroyed during the Second World War and rebuilt. The another big fire in 2000 destroyed 80% of interior and the restoration is still going on. The garden is used for events.
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.