Armory

The armory is the structure where terran researchers and test groups work to develop improved materials for the weapons and armor used by terran vehicles and starships.

StarCraft
The armory provides upgrades for terran vehicle and starship armor and weaponry and is required to build valkyries and goliaths.

StarCraft II
The armory is required for the production of the Thor.

Wings of Liberty Upgrades
In StarCraft II: Wings of Liberty, armories can be equipped with ultra capacitors, which make weapon upgrades increase weapon speed by 5% in addition to extra damage, or vanadium plating, which allows armor upgrades to increase health by 5% in addition to extra armor. Each of these upgrades cost 5 protoss research points.