Francois Mathieu Mole (1705-1793), Chairman of the Parliament of Paris, did redesign the Renaissance castle and replant the park, it's said that it was on the advice of the naturalist Georges-Louis Buffon (1707-1788). Looted during the Revolution, the gardens were redesigned in 1846 by Louis Varé Sulpice (1808-1883). Now owned by the town, the castle park, covering an area of twenty-seven hectares, offers the public its majestic spaces deployed around large ornamental ponds. Recently renovated, the botanical garden experiment, created by landscape architect Pascal Cribier in 1999 around the water cycle, is open to the public.
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.