The earliest records of Kellie go back to 1150 where it is mentioned in a charter issued by King David I. The first known owner was Robert of London, the illegitimate son of King William the Lion. None of the early buildings to have survived.
The estate was signed over to a Siward relative, Walter Oliphant, in 1360 and the castle remained in the ownership of the Oliphant family until 1613. It was purchased by Sir Thomas Erskine, who had saved the life of King James VI during the Gowrie Conspiracy. The King stayed at Kellie in 1617 during his only visit to Scotland after the Union of the Crowns, and he appointed Erskine as Earl of Kellie in 1619.
Originally a simple tower house, the lower section of what now constitutes the northwest tower is the oldest part of the castle, dating from around 1360, and is said to be haunted. In 1573 a new tower was built by the 4th Lord Oliphant to the east of the original tower. It is believed that the 4th Lord built the east tower as a jointure-house (a property set aside for the wife after the husband's death) for his wife Margaret. Between 1573 and 1606 the two towers were linked by a new range, terminated by another tower in the south-west, creating the T-plan layout that remains today. The castle is a fine example of Scots Baronial domestic architecture, with an imposing mix of gables, corbelled towers, and chimneys.
The walled garden is 17th century, with late Victorian additions, contains a fine collection of old-fashioned roses, fruit trees and herbaceous plants.
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.