Arelate was a city of considerable importance in the province of Gallia Narbonensis. It covered an area of some and possessed a number of monuments, including an amphitheatre, triumphal arch, Roman circus, theatre, and a full circuit of walls. Ancient Arles was closer to the sea than it is now and served as a major port. The river has carried centuries of silt that has filled in the former harbor. The city had (and still has) the southernmost bridge on the Rhône.