Lincoln Home - Springfield, Illinois. STAY on the carpet runner!!!
Smithsonian National Museum of American History - my second fave Smithsonian Institution.
National Air and Space Museum: The Smithsonian Institution's National Air and Space Museum maintains the largest collection of historic air and spacecraft in the world. It is also a vital center for research into the history, science, and technology of aviation and space flight, as well as planetary science and terrestrial geology and geophysics. For more Information about Blue Star Museums, please visit our website at: http://www.arts.gov/national/bluestarmuseums
Smithsonian National Air and Space Museum. My favorite of the Smithsonian museums.
Museum of Science and Industry, Chicago donates 4 general admission tickets to 501C3 groups in which the funds raised from the donation with benefit educational programs for K-12. This is a $72 value. Requirements and online donation request form: http://www.msichicago.org/about-the-museum/museum-faqs/donation-requests
Museum of Science+Industry - still one of my faves.