Threave Castle is situated on an island in the River Dee, 2.5 kilometres west of Castle Douglas in the historical county of Kirkcudbrightshire in the Dumfries and Galloway.
Built in the 1370s by Archibald the Grim, it was a stronghold of the 'Black Douglases', Earls of Douglas and Lords of Galloway, until their fall in 1455. For part of this time, the castle and the lordship of Galloway were controlled by Princess Margaret, daughter of King Robert III and widow of the 4th Earl. In 1449 Threave was regained by the 8th earl, Scotland's most powerful magnate, who controlled extensive lands and numerous castles. He fortified Threave with an 'artillery house', a sophisticated defence for its time. The excessive power of the Black Douglas lords led to their overthrow by King James II in 1455, after which Threave was besieged and captured by the King's men.
It became a royal castle, and in the 16th century hereditary responsibility for Threave was given to the Lords Maxwell. It was briefly held by the English in the 1540s, but did not see serious action until the Bishops' Wars, when in 1640 a royalist garrison was besieged by a force of Covenanters. Partially dismantled, the castle remained largely unused until given into state care in 1913. The ruins, comprising the substantially complete tower house and the L-shaped artillery house, are today maintained by Historic Environment Scotland as a scheduled monument.
The castle complex is open to the public.
References:The Gravensteen is a castle in Ghent originating from the Middle Ages. The name means 'castle of the counts' in Dutch. Arnulf I (918–965), Count of Flanders, was the first to fortify this place, building a medieval bastion on this high sand dune, naturally protected by the river Leie and its marshy banks. This bastion consisted of a central wooden building and several surrounding buildings, also in wood.
In the early 11th century, the wooden building was replaced by a stone residence, consisting of three large halls that made up three storeys, connected by a stone stairwell. The monumental stone staircase, the light openings, the fireplaces built into the walls and the latrines were signs of considerable luxury and comfort in those days. There was probably also a tower.