Why survey cities? Urbanised societies have been characteristic of most of the Mediterranean region for the past two and a half millennia, longer to the east, with small numbers of urban centres in the Aegean from 2000 BC, and in the Levant from the later fourth millennium BC. There is healthy debate about the characteristics and roles of such centres, by no means uniform, but for most periods since their initial development or introduction in each local region, densely occupied communities with populations in at least the thousands have been the principal focal nodes within the landscape. They usually constitute the most complex and differentiated communities: socially, economically and politically. They are where significant proportions of the regional population resided, where the most far-reaching social, economic and political decisions were made, and where history was written, in the literal and figurative senses. Archaeologically, they have long been the principal focus of research, as Classical scholarship, pursuing the antiquarian tradition, documented sites and monuments mentioned in surviving written records. Broadening the questions, and the types of investigations needed to address them, has been a slow process; this can be tracked by perusing annual summaries of regional research over the past century. Until recently, uncovering yet another Greek temple or Roman basilica seems to have needed no justification; their value for understanding the past was assumed to be obvious. A major departure in the orientation of Mediterranean fieldwork emerged from the 1970s, with the wide proliferation and rapid methodological development of intensive regional field survey. This moved away from the high-profile remains, addressed more explicit questions, and with its almost invariably diachronic data, encouraged explicitly broad and comparative perspectives. The focus for such surveys, throughout the Mediterranean, has overwhelmingly been the rural landscape. In many cases, this was a reaction against the urban, monumental, and largely descriptive concentration of previous fieldwork. But it was also pragmatic, with small, relatively inexpensive surveys providing fieldwork opportunities for the rapidly expanding numbers of academic archaeologists wanting to work within the Mediterranean.