The Art Institute of Chicago is one of the oldest and largest art museums in the United States, located in Chicago, Illinois. Founded in 1879, it houses an extensive collection of artworks, including paintings, sculptures, and decorative arts from various cultures and time periods. The museum is particularly known for its impressive collection of Impressionist and Post-Impressionist paintings. The museum's iconic building features a grand entrance with bronze lion statues and a modern wing that showcases contemporary art. Visitors can explore over 300,000 works, including masterpieces by artists such as Grant Wood, Georgia O'Keeffe, and Pablo Picasso. The Art Institute also offers educational programs and special exhibitions throughout the year.