ABSTRACT
Medieval Rome developed to a large extent in the ancient Regio IX Campus Martius, that had assumed a monumental character thanks to the building programs of emperors like Augustus, Domitian and Hadrian. Modern scholarship of the topography of Ancient Rome divides this region into three parts: the northern, central and southern Field of Mars. It was common in Ancient Rome for residential and economic functions to be present in a single building block with the storage spaces on the ground floor and the apartments on the upper levels. During the early Middle Ages the urban landscape of Rome in general and of the Field of Mars was radically transformed into that of a medieval city. The careful avoiding of the ancient monuments could be evidence of the relative good state of conservation of the ancient buildings at the time that the itinerary was being developed and their importance as landmarks in the urban landscape of early medieval Rome.
