It’s hot out there, so get somewhere it’s cool — like Washington, D.C.’s Smithsonian Institution, the world’s largest museum and research complex.
The Smithsonian Institution: Sights and Shadows
It's hot out there, so get somewhere it's cool -- like Washington, D.C.'s Smithsonian Institution, the world's largest museum and research complex.
Kevin Lamarque / Reuters
Images of stamps line the ceiling of the Smithsonian's National Postal Museum in Washington, D.C. July 10, 2012.
