Porta Pia is a gate in the Aurelian Walls of Rome, Italy. One of Pope Pius IV's civic improvements to the city, it is named after him. Situated at the end of a new street, the Via Pia, it was designed by Michelangelo in replacement for the Porta Nomentana situated several hundred meters southwards, which was closed up at the same time. Construction began in 1561 and ended in 1565, after the artist's death. A 1561 bronze commemorative medal by Gianfederico Bonzagna shows an early plan by Michelangelo, very different from his final design.[1].