A trip to Rome does not seem complete without a visit to the Colosseum, does it?
Emperor Vespasian in AD 72 commissioned the Colosseum, using a marshy lake on Nero’s palace grounds for construction and construction ended in AD 80 under Emperor Titus. The building could hold some 55,000 and was a gathering and relaxation place as much as it was a place to watch gladiator fights. Even then, there were concessions stands where you could buy food and drink. I suppose there probably were lines for the toilets in between fights, too. The building was in use for entertainment until the early Middle Ages, after which it was used for such purposes as housing, workshops, quarters for a religious order, a fortress, a quarry, and a Christian shrine.