Ticket: Escorted tour of Casa di Colombo Not far from Porta Soprana, just outside the ancient medieval walls, is the Casa di Colombo, where the discoverer of the Americas lived in his youth. According to archival documents, Domenico Colombo, father of the great navigator, moved here in 1455, when Christopher was four years old. The ground floor of the house was used as a workshop; an attic with wooden beams divides it from the upper floor, where the rooms for private use were located. Ticket: Escorted tour of Casa di Colombo Not far from Porta Soprana, just outside the ancient medieval walls, is the Casa di Colombo, where the discoverer of the Americas lived in his youth. According to archival documents, Domenico Colombo, father of the great navigator, moved here in 1455, when Christopher was four years old. The ground floor of the house was used as a workshop; an attic with wooden beams divides it from the upper floor, where the rooms for private use were located.