The Fontana dell'Acqua Paola, also known as Il Fontanone, is a popular landmark located on the Janiculum Hill near the church of San Pietro in Montorio, in Rome. It was built in 1612 and named after Pope Paul V who restored the Acqua Traiana aqueduct to provide clean drinking water for local residents.

The fountain is made of white marble from the nearby ruins of the Roman Temple of Minerva in the Forum of Nerva, with five arches and streaming cascades of water into five basins. Atop the fountain is the papal tiara and keys, above the Borghese family coat of arms.

The Fontana dell'Acqua Paola adds a historical charm to the area and is a must-see when visiting Rome. It's just a 10/15 minutes walk from the Trastevere area and it's such a gorgeous place to see. The view near the fountain is amazing as well, but for the best view head over to the Janiculum viewpoint nearby.