“…Such evidence has been confirmed through a number of models and case studies about the physical and functional separation between ports and cities in the last decades (Bird, 1963;Hoyle, 1989;Murphey, 1989;Norcliffe et al, 1996). Other studies have demonstrated the temporal and geographic variability of such a phenomenon (Brocard, 1988;Ducruet and Lee, 2006;Lee et al, 2008;Ducruet and Itoh, 2016), echoing earlier critiques of the central place theory ignoring the port function, using the concept of gateway (Burghardt, 1970;Bird, 1973). In Europe, port cities were found to be demographically larger (Vleugels, 1969) and economically richer (Lever, 1995) than other cities.…”