The Opera Garnier or Palais Garnier is an opera house located in the 9th arrondissement of Paris, France. The building is considered one of the masterpieces of the architecture of its time. Built in neo-baroque style, it is the 13th theater to host the Paris Opera since its foundation by Louis XIV in 1669. Its capacity is 1979 seated spectators.
The palace was commonly called only the Paris Opera but after the inauguration of the Bastille Opera in 1989 it came to be called the Opera Garnier.
The Opera was designed in the context of the great urban reform of Paris in the Second Empire, led by the mayor of the Paris region, Georges-Eugène Haussmann. For its construction, in 1859, Haussmann was authorized by Napoleon III to promote the cleaning of 12,000 m² of land. The project was the object of a public contest in 1861, which was won by the architect Charles Garnier (1825-1898), who was then an unknown professional, 35 years old, who would later also build the Monte Carlo Opera , in Monaco.