Pitsligo Castle originated as a 15th-century keep. There is an arched gateway in the west wall of the outer court, with the date 1656 and the arms of the Forbes and Erskines. In the inner court the date is shown as 1663. At the north-east angle of the courtyard there is a tall flanking drum-tower. The main tower had three vaulted stories, but almost all above the lowest has disappeared. There is a stair tower at the north-east corner which is better preserved. There are panels dated 1577 over the courtyard doorway.
References: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.