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One of Oslo's major highlights, the National Gallery houses the nation's largest collection of art. Some of Edvard Munch's best-known creations are on display here, including his most renowned work, The Scream. There's also an impressive collection of European art, with works by Gauguin, Picasso and El Greco, plus impressionists such as Manet, Degas, Renoir, Matisse, Cézanne and Monet. Norwegian artists have a strong showing, too, including key figures such as J.C. Dahl and Christian Krohg.