Temple A, built at the beginning of the 2nd century B.C. on a monumental terrace, stands on a podium with four frontal columns and a single inner chamber. Of the decorations, conserved in situ are the lion’s head protomes, which decorated the cornice and part of the frieze in Doric style, alternating smooth metopes and triglyphs. In 2015 some surveys were carried out within the chamber that permitted the rediscovery of the paving, made of limestone slabs and the verification of the eventual presence of the earlier phases.
The complex was excavated from the beginning of the second half of the 1800s and attracted the attention of renowned scholars for its inscriptions in Oscan and the large number of bronze weapons, placed as trophies in the frontal portion of the building. The podium was entirely rebuilt during 1980, thanks to a restoration aimed at giving a more complete picture of the total volume of the structure.