The Porta del Popolo, historically known as the Porta Flaminia, is an old city gate of the Aurelian Walls in Rome, Italy. It serves as the border between Piazzale Flaminio and Piazza del Popolo. Built by Pope Sixtus IV for a Jubilee Year in 1475, it stands at a height of one and a half metres above its ancient ground level. The name "Porta del Popolo" has been subject to speculation, possibly deriving from the many poplars covering the area; alternatively, it may be connected with the origins of the nearby Basilica of Santa Maria del Popolo.