Housed in the stunning Beaux-Arts style Gare d'Orsay railway station, The Musée d'Orsay is home to significant and stunning works by painters including Gauguin, Monet, Manet, Degas, Renoir, Cézanne, and Van Gogh. It's widely considered to be one of the most culturally important museums in the world.
Its entire collection is from the period 1848-1914, including many of the most significant impressionist and post-impressionist paintings ever created. Chronologically, the works come after those of the neighboring Louvre, and before the collection of the nearby Pompidou Centre.
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By the way, I am from Minnesota, not Singapore :)