Law Castle is situated on the lower slopes of Law Hill on the edge of West Kilbride, in North Ayrshire, Scotland. It is around 200 metres from the railway station. The castle is a simple rectangular structure with a sloped roof and several large chimneys protruding at each side. It is similar in character to other tower houses located nearby, including Little Cumbrae Castle and Skelmorlie Castle, and is a category A listed building.