Grenchen Castle, also called "Bettleschloss", was built in the 12th Century in the mountains of northwest Switzerland. The castle was occupied for nearly 300 years, but was demolished in the 16th Century so the stone could be used for other buildings. Only the foundations survive today.
Grenchen is a small example of the castles found throughout the mountainous regions of central Europe. The castle consists of a square tower and a small courtyard with buildings along the walls.
My reconstruction of Grenchen Castle is 20 x 25 inches (64 x 80 studs) and is about 20 inches high.
For more photos of my reconstruction of Grenchen
For photos of the real Grenchen Castle and other source