Orchardton Tower is a ruined tower house in Kirkcudbrightshire, Dumfries and Galloway and is remarkable as the only cylindrical tower house in Scotland.
The Cairns family, who built Orchardton, were associated with the area from the early 15th century. John Cairns built Orchardton Tower soon after 1456. Circular towers such as this were common during the thirteenth century, but had largely been replaced by square and rectangular tower houses by the 1400s: Orchardton Tower is thus unique in being built around 200 years after such towers had gone out of fashion.
Using stones from the original castle that adjoined Orchardton Tower, Robert Maxwell completed construction of a new, more comfortable manor house (now called Orchardton Castle) a few miles away.
The round tower was located at the north east corner of a fortified yard or barmkin, which would have sheltered livestock and provided cellars, a bakehouse, and probably a hall built on an upper level. The tower itself was reserved for living quarters, and was accessed via a stair, possibly moveable, from the barmkin up to a first floor doorway. The present entrance, on the north of the tower, was constructed in the 17th or 18th century. A new door was formed from an existing window and a permanent stone stair constructed.
The tower is 11m, in height, and around 9m in diameter, tapering slightly to the top. A corbelled parapet forms the top of the walls, with a gabled caphouse covering the spiral stair, which is within the 1.8m thick wall. Inside, a vaulted cellar occupies the ground floor. Above this was a main room with fireplace, deep windows with seats, and a carved lavabo or piscina. Above this would have been two further rooms, although the wooden floors have collapsed.
References:Château de Niort is a medieval castle in the French town of Niort. It consists of two square towers, linked by a 15th-century building and dominates the Sèvre Niortaise valley.
The two donjons are the only remaining part of the castle. The castle was started by Henry II Plantagenet in the 12th century and completed by Richard the Lionheart. It was defended by a rectangular curtain wall and was damaged during the Wars of Religion. In the 18th century, the castle served as a prison.
The present keeps were the central point of a massive fortress. The southern keep is 28m tall, reinforced with turrets. The northern tower is slightly shorter at 23m. Both are flanked with circular turrets at the corners as well as semicircular buttresses. Each of the towers has a spiral staircase serving the upper floors. The Romanesque architecture is of a high quality with the dressed stones closely jointed.