Castle Põltsamaa linnus

You're standing at Põltsamaa Castle, on the banks of the Põltsamaa River in the middle of Estonia. In German it was called Schloss Oberpahlen. First, look at the water around the walls. That's the old moat. It all started here in 1272, when the Livonian Order built a tough crusader stronghold. It was a square fortress with three gates and an inner courtyard. Small rectangular towers stood at three of its corners.