Spandau (45), an important town and fortress of Prussia, in Brandenburg, at the confluence of the Spree and Havel, 8 m. W. by N. of Berlin; fortifications are of the strongest and most modern kind, and in the "Julius Tower" of the powerful citadel the German war-chest of £6,000,000 is preserved; there is an arsenal and large Government cannon-foundries, powder-factories, etc.