Boghall Castle, Biggar
Open to visitorsa Historic Environment Scotland site — many are free to wander; staffed ones charge and keep set hours
Substantial ruinsruined, but plenty survives above ground
Boghall Castle, Biggar is one of twelve castles the Albion Guide lists in South Lanarkshire. The site is in the care of Historic Environment Scotland. Carstairs Station is 12.2 km away to the north-west. For more of the same, High House of Edmonston and Covington are close by.