
Heavy defensive tower that fires a springald. Must be built on a Stone Wall segment. Infantry can use the tower to access the top of the walls.
Towers and Keeps repair nearby walls and gates for +25 health per second.
Blacksmith
Ranged Damage Technology
Increase the ranged damage of all arrows, bolts, and emplacements by +1.
Keep
Boiling Oil: Towers and Keeps gain a boiling oil attack against nearby units that deals 30 damage.
Extra Materials: Towers and Keeps repair nearby walls and gates for +25 health per second.
University
Court Architects: Patronage of the finest builders increases all building health by +30%.
Incendiary Arrows: Flammable munitions grant non-gunpowder ranged units a siege arrow or bolt when attacking buildings and increase their damage by +20%.