The audience sits centered around a hanging chandelier, weighing over six tons, and the large stage was built to accommodate up to 450 artists. It is opulently decorated with marble friezes, columns, and statuary, many of which are used to portray deities from Greek mythology. The Paris Opera was meant to be a social gathering space for the people, which is reflected in the interweaving corridors, stairwells, landings and alcoves which allow movement of large masses of people while also permitting socializing during intermission.
Palais Garnier became an influential architectural prototype for many theaters built around the world.
Source : Archdaily