Architecture and urban planning have always been deeply involved in the design and building of defense facilities because cities have been centers of economic, political and military power since the dawn of civilization. The famous Roman architect Vitruvius was himself a military engineer before engaging with architecture. Defense walls, towers and other fortifications dominate every pre-modern city around the world. The advance in modern technology, artillery and airpower fundamentally changed this. Traditional fortifications were no match for modern firepower. Thus, military conflicts spread throughout the territory drawing the creation of new kinds of fortifications – such as bunkers and trenches. With industrialization, however, cities ...