Before a city called Rome even existed, the area's marshy valleys and steep hills offered natural protection to the individual communities that eventually united as the population increased. In the fourth century BC, Ancient Rome's Servian walls encircled the Seven Hills. While modern Rome has far outgrown its original limits, the Seven Hills area still serves as the geographic and historic heart of the city.
The hills—prominent in ancient times—can be hard to distinguish amid modern Rome’s jumble of buildings, so it's best to visit with a local guide. Touring by Vespa, Italy's famous peppy scooter, is a fun way to see the Seven Hills.