Seemingly unremarkable items like empty sushi trays, chef hats, and freshness stickers are being preserved so future generations can look back on this beloved cultural import.

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

You could be standing at the site of one of D.C.'s most fatal tragedies and not even know it.

A brass plaque dedicated to a convicted cannibal hangs in the National Press Club, and that's not even the craziest part of the story.

Rumor has it the uncarved lump behind the three famous suffragists is reserved for the first woman president.

A computer bug so primitive it was an actual insect.

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

There's a crumbling old mansion inside the Smithsonian National Zoo.

An obscure public service from the U.S. government that redeems burnt, moldy, and soiled old greenbacks.

Government testing at the asylum briefly explored using marijuana as a "truth serum" on Nazi prisoners of war.

The most decorated dog of World War I is preserved in the Smithsonian.

A nostalgic bibliographic gem.

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 winding route passes through an enclosed alleyway, two tunnels, and leads to the White House basement.

A hidden gem on the lawn of the U.S. Capitol Building designed by landscape architect Frederick Law Olmsted.

A lovely aquatic park built by a one-armed Civil War veteran who made a fortune from lotuses.

A painfully obvious spy house sits right across the street from the Russian Embassy.

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

Home to items never before seen by the public.

It's not a typo, now say it five times fast!

Artisans have been gathering in North Carolina since 1989 to show off whimsical takes on an everyday item.

Hidden amid a collection of trails is the site of a tragic crash.

This small exhibit explores the lives of Chang and Eng, the first known conjoined twins.