Tour the dark and beloved poet's former cobwebbed basement, which may have inspired "The Black Cat."

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

A memorial to the nearly 10,000 American soldiers laid to rest on the beaches of Normandy during WWII.

The only National Monument ever to go missing for nearly 50 years then resurface in a dump.

Those with a sharp eye can find the hidden image of a German Shepherd on the memorial's Mural Wall.

The span is crooked and made from two older recycled bridges.

Perhaps the most scandalous statue of America's first president.

A museum cafe showcases Native American dishes and indigenous ingredients from across the Western Hemisphere.

Decades before the scandal, this staircase on the river was a literal "water gate."

A celebrity from the late Cretaceous period.

The famous abolitionist’s preserved estate is one of Washington's finest monuments to its great Black citizens.

The national park was once a plantation estate.

There’s a hidden military meme engraved on the World War II Memorial.

This stunning blue and gold room changed cities twice before becoming part of the Smithsonian.

The beloved statue at the National Academy of Sciences is oh so inviting to sit on.

A three-story tower of books about Abraham Lincoln is one of the more unusual monuments to the president.

A tiny piece of the Moon is embedded in this stained glass masterpiece.

One of the dwarven trees dates back to 1625 and survived the Hiroshima bombing.

Home to items never before seen by the public.

The site of the climactic scene from the classic horror film is now a historic landmark.

The United States Capitol's former columns still stand.

This old school, eccentric, and independent video rental store refuses to die.

One of corporate America's best-kept secrets is also one of the most publicly displayed.

The largest puppetry museum in the United States houses the world's most complete collection of Jim Henson artifacts.