At the meeting point between the two main streets of the city, the cardus maximus and the decumanus maximus widens the Forum, the main square that housed the most important religious and civil buildings. The current shape of the forum, flanked by porticoes with splendid Corinthian columns, dates back to the Hadrian era (117-138).
The temple was supposed to reach a height of about twenty metres. It was probably covered in marble - the holes in the masonry for anchoring the slabs are still visible.
On the opposite side of the forum was the Temple of Rome and Augustus, of which only the foundations remain today, while on the long sides of the square were facing the basilica - a building that, in Roman times, was intended for the administration of justice and not for religious practices - and a series of arcades.