Strangford Castle appears to be a small tower house from the late 16th century, but a blocked door of 15th century type at first floor level, seems to indicate the remodelling of an earlier tower. The current entrance, in the north-east wall, is a reconstruction, positioned by the surviving corbelled machicolation above and a socket from a draw-bar to secure the original door. The original entrance may have been on the first floor. It is a small, rectangular, three-storey tower house with no vault or stone stairway. The first floor fireplace has an oven. The ground floor chamber is lit only by small gun-loops. The roof has very fine crenellations, again with pistol-loops. The original floors, like their modern replacements, were made of wood.
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.