Drumlanrig Castle is situated on the Queensberry Estate in Dumfries and Galloway, Scotland. The category A listed castle is the Dumfriesshire home of the Duke of Buccleuch and Queensberry. As of September 2023, the castle itself is open to the public during very limited times of the year, with the surroundings, such as the stableyard and adventure playground being open nearly all year round. Walking, hiking, and cycling routes are open all year long, unless officially closed due to unforeseen circumstances, such as in 2021 due damage inflicted by Storm Arwen.

Richard Walter John Montagu Douglas Scott, 10th Duke of Buccleuch and 12th Duke of Queensberry,, styled as Lord Eskdaill until 1973 and as Earl of Dalkeith from 1973 until 2007, is a Scottish landholder and peer. He is the Duke of Buccleuch and Queensberry, as well as Chief of Clan Scott. He is a descendant of James, Duke of Monmouth, the eldest illegitimate son of Charles II and his mistress, Lucy Walter, and more remotely in a direct male line from Alan of Dol, who arrived in Britain in 1066 with William the Conqueror.