The Old Powder Magazine
is the only public building remaining from the era of the Lords Proprietors, the eight English aristocrats who owned Carolina from 1670 to 1719.
Charles Town, as the capital and southernmost English settlement on the continent, was strategically important. The town was repeatedly attacked by pirates, marauding Spanish naval vessels, and Indians. Along with the high walls and a moat that surrounded Charles Town, the Powder Magazine, as the principal storehouse of munitions and gunpowder, was crucial for the defense of the city.