This ancient town rises from the Treja valley like a solemn monument: the few remaining residents keep company with the increasingly larger number of foreigners and artists who have bought old houses there, transforming them into elegant homes. Various and cultural activities have arisen around the old crafts shops (the "cacera", the "forno a soccio", the "forno venale"), the "Documenta" storehouse and the "Granarone", used far exhibits, conferences, concerts and other events.

The collegiate church of SS. Cornelio e Cipriano dates to the first half of the fourteenth century and has been enlarged and restored several times. The relic of Jesus' prepuce was preserved here far many years but was stolen.

Valle del Treja

Located in the communal territory of Calcata and Mazzano Romano (in the province of Rome), the natural park re­serve of Valle del Treja is crossed by the homonymous river and covers an area of about 1000 hectares. On Mount Gelato, an old millstone at the Gelato waterfalls paints a charming picture.

The "Natural Art Museum" in the park offers an itinerary of artwork done with the taste and techniques of naturalistic aesthetics. The group of artists who created this original open-air museum used natural materials obtained from the forest to make compositions that, in­separable from the surrounding territory, live in symbiosis with the environment and the seasons, taking on their colours and scents.

Visitors can get information and assi­stance at theVisitors' Centre in Maz­zano Romano.