Acquedotto medievale, Medieval aqueduct in Salerno, Italy.

The Acquedotto medievale di Salerno is a medieval aqueduct in the historic centre of Salerno, running beneath the Bonadies hill and Arechi castle. It has two branches, one from the northern hills and one from the eastern heights, which met at today's via Arce near a corner of the old city walls. Part of it runs on arches, where an early use of the pointed arch is attested.

This structure was built in the 9th century during Lombard rule and originally served to bring water to the Benedictine monastery. Its construction demonstrates the engineering skill of that medieval period.

Local stories gave this structure the name Ponte del Diavolo because people believed an alchemist named Pietro Barliario used supernatural help to build it. These tales reveal how the community saw the massive engineering work as something beyond ordinary human capability.

Different sections of this structure are accessible from various points throughout the city due to how it is distributed across Salerno. Walking around the city allows you to spot and observe portions of both the above-ground and underlying parts.

The aqueduct's arches show an early use of the pointed (ogival) arch, a novelty at the time that may have unsettled locals and fed the devil legends. The structure is nicknamed Ponte del Diavolo in Salerno dialect.