It's worth it, when visiting the Roman ruins of Volubilis just outside Meknes in Morocco, to hire a guide. He'll take you through the stone ruins and tell you about the sophisticated city that housed and fed 20,000 people from the time when B.C. turned to A.D. He'll lead you down on rutted stone streets where wagons and chariots trumbled past. He'll describe the delicate mosaic floors still in tact on what once were grand homes. And he'll share engineering details about the aqueduct system that sustained the population and the numerous baths.
While listening, you may look up at the remaining columns and walls and truly realize the true only-an-empire-could-build-this-kind-of city almost 3000 km from its seat in Rome.