Complex sentence: Rebuilt after the 1994 fire, it is a faithful rebuilding of the 1861 auditorium, with some improvements and 2,292 seats, one of the biggest opera houses in Europe.
Split into simpler sentences: Rebuilt after the 1994 fire it is a faithful rebuilding of the 1861 auditorium with some improvements. With 2,292 seats it is one of the biggest opera houses in Europe.