A siege tower could be used by an attacking army to try to capture a castle. A high tower on wheels would be built and rolled up to the castle in an attempt to overpower the defenders on the walls.

This Siege Tower has four platforms inside. Long ladders on the back let the attackers climb to the top of the wall as quickly as possible. Arrow slits in the walls of the tower are used by archers to shoot at the enemy on the walls and to defend the tower in case it is attacked.

A drawbridge at the top is lowered when the tower is in place so the knights inside can storm across to the walls. Archers on the platform at the top provide cover for the attacking knights.