The Pons Aemilius (Latin for the "Aemilian Bridge"; Italian: Ponte Emilio) is the oldest Roman stone bridge in Rome. Preceded by a wooden version, it was rebuilt in stone in the 2nd century BC. It once spanned the Tiber, connecting the Forum Boarium, the Roman cattle market, on the east with Trastevere on the west. A single arch in mid-river is all that remains today, lending the bridge its name Ponte Rotto (Italian for the "Broken Bridge").

Text from Wikipedia (CC BY-SA 4.0). Photo: currybet, CC BY-SA 2.0, via Wikimedia Commons.