Comunanza territory is located along the upper valley of the River Aso and has a split personality, with its industrial buildings in the lower part of the town, erected in the 1960s, and its Medieval soul, visible in the old centre that still retains the characteristic appearance of a village of the Middle Ages.

The Aso river divides the modern city from the old town, which can be reached over a bridge that crosses homes set sheer over the river. Beyond the bridge, we find the church of Santa Caterina d’Alessandria. Rebuilt in neoclassical style in 1831 to a design by Pietro Maggi, has a Baroque organ with two keyboards, unique in Europe for its age, size and sound.

In the historical centre the late-Romanesque church of San Francesco features front porches and a bell tower, while the aisleless interior has a trussed roof and eighteenth-century altar.

Historic Palazzo Pascali is not only the home to the city library but also to the museum of sacred art, which houses some extraordinary goldsmithing and also works by Giuseppe Ghezzi (1634– 1721), an artist originally from Comunanza, named director of the Roman academy of San Luca.

At the centre of what was once the Roman settlement of Interamnia, we find the sandstone church of Santa Maria a Terme, built in the ninth century in the Romanesque style above the remains of a temple dedicated to Dionysus. The square building has an apse divided into three parts by pilasters, while the façade is adorned with animal sculptures; the aisleless interior has a barrel vault and thirteenth-century frescoes.

To explore further, it is well worth visiting the hamlet of Cossinino da Piedi, deep in the woods with its Templar mysteries, but also the Roman bridge of Gerosa, and the picturesque Lake Gerosa.