Tempio di Vesta in Tivoli

You're standing at the so-called Temple of Vesta in Tivoli. Just look at where it sits: a small round temple perched right on the edge of the old citadel. Below you, the Aniene river tumbles down into a narrow, wild gorge. It's hard to imagine a more dramatic spot for a temple. The Romans built it in the early first century BC.