Ivano castle history dates probably to the late 6th century AD, when Longobards built a fortifications against Franks and Alemans. Later it was extended agains Hungarian invasions. The first recorded document about the castle dates back to 1187 and there is a mention of the Lord of Ivano.
The Castle displays a mixture of architectural styles: the medieval walls, the Renaissance residence and the Benedictine lodge. From the watch tower you come to a moat and a large gate, followed by the outer courtyard with a fountain and an historical acacia tree from the 16th century. Next are the large hall of the old barn and the 17th century chapel. As you go on, you reach the inner courtyard, with two buildings linked by galleries.
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.