| Buchanan Castle | |
|---|---|
 Buchanan Castle in the 1890s | |
| Coordinates | 56°03′56″N 4°28′19″W / 56.06556°N 4.47194°W |
Listed Building – Category B | |
| Designated | 5 September 1973 |
| Reference no. | LB4045 |
| Designated | 1 July 1987 |
| Delisted | 1 August 2016 |
| Reference no. | GDL00077 |
  Location in Stirlingshire | |
Buchanan Castle is a ruined castle in Stirlingshire, Scotland, located 1 mile (1.6 km) west of the village of Drymen. The house was commissioned by the 4th Duke of Montrose and built in 1852–1858 as a home for the Montrose family, serving as such until 1925. It was built as a replacement for Buchanan Auld House, which is located 0.5 miles (0.80 km) to the northwest but was destroyed in a fire in 1852. The old house and surrounding lands had been the property of the Clan Buchanan but passed to the Clan Graham in the late 17th century. The roof of the building was removed in 1954 and the condition of the house has since deteriorated, but it remains the seat of the Clan Graham.