The National Museum in Warsaw (Polish: Muzeum Narodowe w Warszawie), popularly abbreviated as MNW, is a national museum in Warsaw, one of the largest museums in Poland and the largest in Warsaw. It comprises a rich collection of ancient art (Egyptian, Greek, Roman), counting about 11,000 pieces, an extensive gallery of Polish painting since the 16th century and a collection of foreign painting (Italian, French, Flemish, Dutch, German and Russian) including some paintings from Adolf Hitler's private collection, ceded to the Museum by the American authorities in post-war Germany.