Archaeologists and historians have set out to reconstruct Rome, in one way or another, from the very beginning of the profession. More recently, scholars have begun to design 3-D simulations of ancient sites and monuments; even Google Earth offers the option of ‘visiting’ ancient Rome as it appeared in A.D. 320. According to the editors of this stimulating volume, however, these reconstructions, with their vast empty spaces and pristine monuments, ignore an important part of ancient Rome: the people, animals, and vehicles that moved through the cityscape. And as anyone who has ever traveled knows, different cities move in different ways, subject to variations in geography, topography, climate, culture, religion, and legal codes. This volume sets out to answer the question of what it was like to move through ancient Rome, Ostia, and Pompeii.