L'Auditori is a modern building of 42,000 square metres designed by the architect Rafael Moneo, opened on 22 March 1999, in Barcelona, Catalonia, Spain. It is in the centre of the new pole of urban development of Plaça de les Glòries, which brings together the three widest and longest avenues in the city near the old centre of the city, its ‘Avenue’, next to the National Theatre, Glòries junction, the opening of the Diagonal on to the sea, district 22@ and the Forum area.