Castle d'Eivissa, also known as Ibiza Castle, stands atop Puig de Vila. Its history goes back to the Middle Ages and the Moorish era. Currently, the partially restored complex is surrounded by thick walls, which are a reconstruction of the Renaissance fortifications.
The two defensive elements of the old fortress have been best preserved to the present day. The first is the Baluarte de Sant Jaume bastion, where you can see an exhibition of weapons used to defend the walls of Ibiza. The second is Baluarte de Sant Pere, which houses an exhibition devoted to the history of the castle and its subsequent extensions.
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.