Trivia: pay toilet tax raiser

To raise public revenue, Emperor Vespasian--who built the Colosseum--was the first to introduce pay toilets in the city of Rome. When his son and successor Titus protested that the toilets were raising a stink with the poor, Vespasian held a coin up to his nose and said, "money doesn't stink." Today, Romans still refer to public toilets as vespasiano.