I want to know the answer to the following question:
When was teh Palais Garnier Opera House built?
All the background I'm provided with is that "The 19th century produced the neoclassical church of La Madeleine (1808-1842); the Palais Garnier Opera House (1875); the neo-Byzantine Basilica of Sacré-Cœur (1875-1919), and the exuberant Belle Époque modernism of the Eiffel Tower (1889).". Is that enough to answer the question?