Figure 3.
Air photo of Naples showing the extent of the city walls. The red line shows the approximate extent of Naples during the fifth century B.C.; the blue line encloses the enlargement of the city during the fourth century A.D.; the green line shows the wall added during the Angevin period; the violet line shows the extension of the wall during the Aragonese period; the orange line shows the extent of the wall during the Viceroy period (modified from Amato et al., 2009).