
Places where you can see this still today are at the Pyramid of Cestius, and near Porta Maggiore where a section of the Aqua Claudia was used for the wall. Approximately 1/6 of the wall might have been composed of pre-existing structures. Everything that lay along the path of the wall was incorporated into the fortifications.

Part of the reason for the quick progress and low cost was incorporation of existing buildings into the new wall. Aurelian died a few months before it was completed even though the construction only took 5 years. It was built from bricks, and featured a walkable passage on the inner side that fully protected soldiers on patrol. It was 11 feet thick and 26 feet high, with a square tower every 97 feet. The wall ran for a distance of 12 miles, surrounding an area of 5.3 square miles. The wall enclosed all seven hills of Rome plus the Campus Martius and the Trastevere district across the Tiber River. By then, Rome had expanded much beyond its old Servian Wall, and although it had stood essentially unfortified for centuries because it was protected by its powerful armies, incursions by Germanic barbarians and Vandals (in 270 AD) and internal revolts forced Rome to rethink its defenses and construct the new, larger and taller wall. The Aurelian Wall (red wall on the map below) was a city wall built around Rome between 271 AD and 275 AD by Emperor Aurelius to replace the then-insufficient Servian Wall (black wall on the map below). Viewable at any time (except as noted below)

A Tourist in Rome - Aurelian Wall and Gates Location:
