Incredible collection at Art Institute of Chicago, part 3

Nighthawks, Edward Hopper, 1942; this is Hopper's most famous painting and has become a fixture of American culture

American Gothic, Grant Wood, 1930; it was a popular sensation when debuted here in 1930 and has become one of the most iconic (and parodied) paintings of the 20th century

Gray and Silver: Old Battersea Ranch, James McNeill Whistler, 1863; the artist's style was heavily influenced by Gustave Courbet's bold realism and thickly painted surfaces

The Child's Bath, Mary Cassatt, 1893; the museum purchased this painting in 1910 and it has been one of the most popular works in the museum ever since

The Fountain, Villa Torlonia, Frascati, Italy, John Singer Sargent, 1907; this was the year Sargent stepped away from a successful career as a portrait artist in favor of plein air painting

The Old Guitarist, Pablo Picasso, 1904; this is one of the most famous works from Picasso's Blue Period which was brought on by the suicide of his best friend

Kylix (Drinking Cup), Greek, 510 BC; the first documented quadrennial games honoring the supreme Greek god Zeus at a sanctuary dedicated to him at Olympia were held in 776 BC

Cow's Skull with Calico Roses, Georgia O'Keeffe, 1931; in 1930 the artist witnessed severe drought in the Southwest causing many animals to die, littering the landscape with bones

Bottle Rack, Marcel Duchamp, 1959; the artist labeled the piece a readymade, a term he used to describe his collection of ordinary, manufactured objects not commonly associated with art

Time Transfixed, Rene Magritte, 1938; this Belgian, Surrealist artist is known for challenging observers' preconditioned perceptions of reality

Farm Near Duivendrecht, Piet Mondrian, 1916; the artist painted the landscapes of his native Holland but achieved fame later for his non-representational paintings

American Collectors (Fred and Marcia Weisman), David Hockney, 1968; an important contributor to the pop art movement of the 1960s, Hockney is considered one of the most influential British artists of the 20th century