 Rising on a hill near the river Cesano, Castelleone di Suasa is also called "green town" because of its flourishing nursery activity.Below the medieval castle there are the remains of the Roman municipality of Suasa, that rose along the branch of the via Flaminia that led to "Sena Gallica" (Senigallia).Since 1987 the Archaeological Superintendence of the Regione of Marche, has started a programme of excavations that has allowed the discovery of the ancient basalt street, the commercial forum, two sepulchre areas, the amphitheatre and, above all, the rich patrician dwelling that has become Archaeological Park.