text: "The cattle-boat trips were an unbelievable opportunity for a small-town boy," Luke says. "Besides helping people, I had the side benefit of seeing Europe and China. But seeing Acropolis in Greece was special," he says. "So was taking a gondla ride in Venice, Italy, a city with streets made of water." Luke also toured an excavated castle in Crete and marveled at the Panama Canal on his way to China.