Barcelona is an extremely ancient city. At first, it was Carthage City. The name came from the surname of Hannibal's father. Carthage commander Hamilka Baka (Hamilcar Barca)), after the first Punic War Carthage lost Sicily, Baka attacked strategically. Developed Spain. Although there is no trace of Carthage today, the appearance of Rome is scarred everywhere in the city. It is said that the Roman wall in Barcelona once had 78 towers... Now out of the subway Jaume I station, you can find the Roman wall and tower in the fourth century. This is a good place for the Romans to fortify and rebuild the walls after the Germanic tribes began to attack.