Dounreay Castle dates from the late 16th century, and is one of the few remaining examples of a Scottish Laird’s castle from that period. William Sinclair of Dunbeath, descended from a younger brother of John Sinclair, third Earl of Caithness, built the castle in the 1560s. It was damaged in 1651 by Oliver Cromwell’s New Model Army during their Scottish campaign. Now entirely ruined, the castle was still inhabited in 1863, but had become roofless and derelict by 1889.
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.