Originally a Roman settlement (Communitas Calitiani), it is situated in a broad wooded basin of the upper valley of the Bormida di Millesimo and dominated by the ruins of the medieval castle of the Del Carretto of Finale. The parish church of San Lorenzo (restored in 1811) was built at the end of the sixteenth century over a Romanesque building whose campanile survives. Palazzo Francelli, seat of the municipality, dates from the baroque era. In the locality of Frassino stands the shrine of Santa Maria delle Grazie, rebuilt in 1816: it has a portico with a frescoed ceiling (fifteenth century) to the left of the façade and a fourteenth-century fresco inside. The high quality of the hotels, campsites and restaurants, frequented by lovers of mushrooms, along with facilities for tennis, basketball, bowls, roller-skating, miniature golf, clay-pigeon shooting and swimming, attracts summer visitors in considerable numbers.