The Civil Forum is the core of daily life of the city and is the focal point of all the main public buildings for city administration and justice, business management, and trade activities such as markets, as well as the main places of citizen worship.

The square of the Forum originally looked like a simple open area with an overall regular shape, made of clay and its western side opened on to the Sanctuary of Apollo, whereas the eastern side had a row of shops. The Forum was significantly modified between the 3rd and 2nd century BC when the shape of the square was regularised, surrounded by porticoes and the bottom paved with slabs of tuff.
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