Barcino, modern-day Barcelona (Spain), lay on the Mediterranean coast in the northeast of the Iberian Peninsula, between the mouths of the rivers Llobregat and Besòs. There, the Romans founded a small colony with little more than 19 km² of urban area, its walls surrounding the gentle hill named Mons Taber (16.9 m above sea level), where there had previously been an Iberian settlement bu…