In an urban municipality disseminated,the national highway running through it acts as the main urban axis. This site,with irregular perimeter, is in the intermediate zone of this axis and becomes so important as the pedestrian routes enclave. The program includes an auditorium, a youth center and a local set of undefined commercial use.For its strong institutional character and its important public use(which we can find to the ground level), the auditorium is seperated from the other uses in a free volume and compactness. Only the foyer opens into the square, acting as an extension of it, and inviting the spectators to the show.