Plean Tower comprises a small oblong tower house probably dating from the 15th century, and an adjoining 16th-century manor house.
Robert Bruce granted the barony of Plean, or Plane, to John d’Erth soon after 1314. The castle was probably built by Lord Somerville, who acquired the lands of Plean in 1449, through marriage.
An adjoining manor house was built in about 1528. In 1643 James Somervell, 8th Lord of Plane, sold the barony and lands to meet debts. It passed to the Nicholsons and the Elphinstones, but both the tower and the manor fell into disrepair. During the 1745 rebellion the Jacobite troops used the property.
Sir David Menzies restored the buildings in 1908, but by the 1930s they were again no longer in use. It was rebuilt from ruins by Nancy and John Patrick Wright and their sons in 1991-1997 to form a home and holiday accommodation.
Plean Castle originally had three stories and a garret, with parapet corbelling. In its rebuilt 1990s form there is a great hall in the tower with painted ceiling beams and a large fireplace. The adjoining modern 'manor house' is connected to the tower by a wooden walkway and is built over a vaulted basement surviving from the 1528 manor house.References:
The Château d'Olhain is probably the most famous castle of the Artois region. It is located in the middle of a lake which reflects its picturesque towers and curtain walls. It was also a major stronghold for the Artois in medieval times and testimony to the power of the Olhain family, first mentioned from the 12th century.
The existence of the castle was known early in the 13th century, but the present construction is largely the work of Jean de Nielles, who married Marie d’Olhain at the end of the 15th century.
The marriage of Alix Nielles to Jean de Berghes, Grand Veneur de France (master of hounds) to the King, meant the castle passed to this family, who kept it for more than 450 years. Once confiscated by Charles Quint, it suffered during the wars that ravaged the Artois. Besieged in 1641 by the French, it was partly demolished by the Spaniards in 1654, and finally blown-up and taken by the Dutch in 1710. Restored in 1830, it was abandoned after 1870, and sold by the last Prince of Berghes in 1900. There is also evidence that one of the castles occupants was related to Charles de Batz-Castelmore d'Artagnan, the person Alexandre Dumas based his Three Musketeers charictor d'Artagnan on.
During the World War I and World War II, the castle was requisitioned first by French troops, then Canadian and British soldiers. The current owner has restored the castle to its former glory.