Staircase, Opéra Garnier, Paris  www.castlesandmanorhouses.com  The Palais Garnier is a 1,979-seat opera house, built from 1861 to 1875 for the Paris Opera. The theatre was known as the Opéra de Paris or simply the Opéra, but became known as the Palais Garnier in recognition of its opulence and its architect, Charles Garnier.
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