9Smithsonian Institution – Washington, D.C., USA

The Smithsonian Institution is the world’s largest museum complex, consisting of 19 museums, galleries, and a zoo. Its diverse range of exhibits covers everything from natural history to space exploration.

Highlights include the Hope Diamond at the National Museum of Natural History and the Apollo 11 Command Module at the National Air and Space Museum. With free admission, it’s an unparalleled resource for education and discovery.

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