One of the most visited sites in Italy, the Roman Forum is also one of the best-known wonders of the Roman world. Though a highpoint on the tourist route around Rome, for many visitors the site can be a baffling disappointment. Several of the monuments turn out to be nineteenth- or twentieth-century reconstructions, while the rubble and the holes made by archaeologists have an unclear relationship to the standing remains, and, to all but the most skilled Romanists, the Forum is an unfortunate mess.

David Watkin sheds completely new light on the Forum, examining the roles of the...