Cairnie was a property of the Lindsay family, later Earls of Crawford, from 1355. The tower was constructed around 1500 by Alexander Lindsay of Auchtermoonzie (d.1517). The second son of the 4th earl of Crawford, Alexander subsequently became 7th earl, inheriting the earldom from his nephew who was killed at the Battle of Flodden in 1513. According to John Knox, James V of Scotland visited the castle just before his death in 1542. It was unoccupied in the 17th century, and was used for religious meetings by an outlawed Episcopal congregation. It was later used for agricultural purposes.
It was originally an L-plan tower house with five storeys, including a barrel-vaulted basement and a garret. The stair tower is located on the north-west side, linking all floors from a ground floor entrance. The parapet and many of the dressed stones forming the window surrounds have been lost. To the north-east is a single round tower, once flanking a gate within an outer enclosure wall.
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.