An enormous warehouse filled with parade floats collected from over 50 years of patriotic celebrations.

'Cause the fence start shaking, the earth was quaking.

Frank Lloyd Wright died a year before construction on his largest public project even began.

A railroad tunnel that, upon its completion, was considered one of the engineering marvels of the modern world.

Hundreds of skulls and bones at the largest skeleton museum in the country.

Bigfoot prints, Feejee mermaids, and haunted dolls on display in a tiny North Carolina town.

Outsider art meets paleontology at this roadside reptile repository.

Exact replica of the ancient monument, but much, much lighter.

This too-low North Carolina railroad trestle is still a notorious big rig executioner.

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

An atomic bomb-proof strongbox protects the U.S. Constitution from terrorists and thieves.

During the Industrial Revolution this “Temple of Invention” was full of intricate miniature machines and gadgets.

Franciscan monks created a facsimile of the Holy Land for North Americans who couldn’t afford the trip overseas.

Long-abandoned trolley tunnels just a mile away from the White House are turning into an art space.

With over 100 jam-packed rooms to explore plus elaborate tea services and events, the Mansion on O Street is a hidden treasure.