The north wing of Clackmannan Tower was built in the early 14th Century and consisted of a rectangular tower, four floors high. The taller south wing was added in the 1500s. The tower sits atop King's Seat Hill and was built to provide strategic control of the Forth River.
The site was sold by King David II to his cousin Robert the Bruce in 1359. The property remained in the Bruce family until 1796.
My reconstruction of Clackmannan Tower is 20 inches long, 15 inches wide (64 x 48 studs) and is about 28 inches high.
For more photos of my reconstruction of Clackmannan Tower
For photos of the real Clackmannan Tower and other source