It is situated at the base of towering rocks called "Morg" Caraceni, which are located at the foot of a mountain on whose slopes have been found many megalithic remains.

On the slope of Monte Saraceno, the Samnites built a complex of worship consisting of a theater, a temple and two arcaded buildings on both sides.

[5] The theater-temple complex is located on the outskirts of Pietrabbondante about 966 metres (3,169 ft) above sea level, next to another small temple with arcaded shops from a previous era (200 BC).

Each of the seats was created from a single stone block with the dorsal elegantly thrown backwards; signs at both ends of each row reserved them for judges, priests, and so on.

On both sides of the orchestra, retaining walls of the embankment (analemma) end with atlases carved in stone (like the Odeon of Pompeii, however, the material is made of soft tuff).

On the left side, an inscription in Oscan recalls Statius Claro, an important figure who built at his expense half of the podium.

The excavations that ultimately discovered the site were conducted in several phases: in 1857 and 1858, by the Bourbons, in 1871–72, out of interest of the Province, and in 1959 and subsequent years through the intervention of the Archaeological Superintendent of Molise.

The perimeter wall rests on a massive support structure built with huge limestone blocks from the nearby archaeological site.

Subsequent to 1696, the building took the shape of a Latin cross, divided into three naves bounded by large plastered square pillars, which support the six arches.

In the right aisle, a sarcophagus was found during the renovation work after the 1990 earthquake near the statues of St. Nicholas of Bari, St. Francis of Paola (1867) and St. Roch the Confessor.

In the transept of the right aisle is the canvas by Angelico Zarlenga dedicated to St. Vincent Ferrer, which commemorates the destruction of housing during World War II and the return of numerous prisoners from concentration camps.