Example image of eyePlorer eyePlorer map for 'Historical urban community sizes': City List of cities proper by population List of largest cities throughout history List of metropolitan areas by population Peter Connolly BBC List of largest European cities in history List of oldest European cities List of urban agglomerations by population (United Nations) Lists of cities Greek diaspora World's largest cities List of cities by time of continuous habitation Cradle of civilization History of Baghdad Megacity Oldest city Baghdad Uruk Early Middle Ages