The Siege Tower was use by invading armies to breach the walls of the castle they were attacking. They varied in size and construction (some up to 135 feet tall!) but the one we have here is typical of the styles used from about 900 BC to the medieval times as attackers tried to get over the walls of a castle. This kit is pegged for greater strength and authenticity and will give you that cool siege feeling with the firing catapult on the top. Historically accurate, this kit creates a durable wood model that can be used for hours of imaginative play with Lego people and 1/18 scale medieval figures. Easy to assemble. All pieces are pre-cut and drilled, requires only scissors. Takes an hour or two to build. Great kit for beginners.