In the Loop, Chicago's commercial district with bustling elevated train tracks and great architecture: Sears Tower - one of the tallest buildings in the world, it has an observation deck on the 103rd floor Grant Park for musical performances and Millennium Park for summer fun The Art Institute of Chicago - one of the finest art museums in the world In the Near North of Chicago: John Hancock Center A bit shorter, but with a better observation deck The Magnificent Mile Put simply, shoppers' paradise. Navy Pier Entertainment center with many attractions including the Chicago Children's Museum, mini golf, ferris wheel, botanic gardens, and boat cruises In the Near South of Chicago, including the Museum Campus: The Field Museum The premier natural history museum in the Midwest, with one of the best preserved T-Rex skeletons on display The Adler Planetarium The first planetarium in North America The Shedd Aquarium Great lakefront aquarium In Chicago's Hyde Park: Museum of Science and Industry The best science museum in the Midwest, with hundreds of exhibits including a German submarine, high speed 1930s train, Boeing 727 jet, and an immense train set. The University of Chicago A premier institution of learning in the Midwest Elsewhere in Illinois: Springfield - The state capital has the capitol building, as well as Abraham Lincoln's tomb, home, and new presidential library. Be sure to check out the Old State Capital as well, notable for its Lincoln heritage and also as the site of U.S. President-Elect Barack Obama's declaration of Joe Biden as his running mate in the 2008 presidential race. Champaign-Urbana is one of downstate Illinois's most prized cities. It is the regional capital of Illinois. It is a very urban oasis in the middle of the prairie. Outside of Chicago, it holds the state's largest ethnic population. There are many museums there. Champaign-Urbana is known for historic Memorial Stadium, where Illini Football plays, and for its nightlife.