Château de Teillan was built probably in the 9th and 10th centuries to the site of an ancient Roman castrum called Villa Telianum. In the 12th century it was sold to the abbey of Psalmody. The chateau is surrounded with a landscape park from the 19th century where are located Roman steles, milestones and a waterwheel. Today Château de Teillan is privately owned, but open in the summer season.
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.