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).

Outside the town there is the rural Chapel of San Martino, where an early canvas by the painter Ercole Ramazzani (16th century) is displayed.

From the medieval village it is possible to descend to the valley below (Pian Volpello zone), where the archaeological area of Suasa is located.

The "Forgiveness Feast", the most important religious event of the year, takes place during the spring season, followed by the Fair on the successive Monday.