The Trevi Fountain (Fontana di Trevi) is an eighteenth-century monument, one of the most famous sights of Rome. Located in the heart of the city, near the Pantheon and Piazza di Spagna, the Trevi Fountain is the most famous fountain in Rome , and a place of passage ! The Trevi Fountain was designed by Italian architect Nicola Salvi and completed by Pietro Bracci.