The primary route to Greece and the East, this gateway is part of the Aurelian Wall, which was a defense system dating back to the third century. The Appian Way is the Roman Republic's oldest highway, with sections still in use today. Take a relaxing stroll along the restored wall and enjoy a matchless view of the surrounding area, little of which has changed from when the Apostle Peter traveled through Rome on foot. BUS: 118 from Circo Massimo metro station or the hop-on hop-off Archeobus from in front of Stazione Termini (see www.trambus.com)