Rome is not one city but many, each with its own history unfolding from a different centre: now the trading port on the Tiber; now the Forum of antiquity; the Palatine of imperial power; the Lateran Church of Christian ascendancy; the Vatican; the Quirinal palace. Beginning with the very shaping of the ground on which Rome first rose, this book conjures all these cities, past and present, conducting the reader through time and space to the complex and shifting realities - architectural, historical, political and social - that constitute Rome.