Treia lies in valley of the Potenza River to the north and belongs to the association The most beautiful villages in Italy. It was founded by the Romans; it was both a Roman colony and  Municipium. In central Piazza della Repubblica you can admire  the little Palace of the Georgica Academy made by  Valadier; the town hall, that is home to the Civic Picture Gallery, and the church of San Filippo. The Cathedral, dedicated to the SS. Annunziata, boasts precious works of art. Must-see attractions are: the church of San Michele, the little church of  S.Chiara, in baroque style, the church of San Francesco, the church of Santa Maria del Suffragio, the 19th century civic Theatre. Tower Onglavina which stands proudly on a rocky spur is all that remains of a former castle. On a clear day it offers one of the most complete panoramas of the Marche region, from the Apennine mountains to the west as far as Monte Conero and the Adriatic to the east.  In San Lorenzo area there is the Sanctuary of the SS. Crucifix, boasting a valuable fifteenth-century crucifix Treia’s  specialty is the so called “calcione”, a typical Easter cake made with cheese. The town is famous for the annual Disfida del Bracciale, played out in the first Sunday of August. This fast and furious ball game dating from Renaissance times is played with three players in each team.