Portraiture is among the most obvious legacies of classical antiquity. Roman busts of rulers and private individuals, sculpted in marble or occasionally cast in bronze, are the frequent inhabitants of museums and country houses. Imposing portrait-statues survive in great numbers, albeit frequently missing some of their extremities. We also have many smaller and more subtle images like those carved in gems and semiprecious stones, and, of course, the heads on Roman coins whose influence on the design of modern money is still obvious. The very custom of modern portraiture itself is, broadly speaking, derived from Rome, though it is easy to take it for granted as if it were an obvious or universal art-form. The Roman world was truly crowded with portraits. They are the subject of intense study and interesting debate. As such they present a useful point of departure for this survey of Roman art history.