Hidden in the plaza next to a pizza shop is an amazing little oddities shop.

Visitors to this shop will find fossils, minerals, meteorites, skeletons, oddities, and much more.

This historical art colony is adorned with thousands of hand-carved concrete sculptures in the Mayan Revival style.

Human skulls and a stuffed goat made into a rocking chair can be found at this strange little store.

An unassuming corner inside downtown Orlando's library offers a whole new world of the park and its history.

Senators used to relax in the nearly forgotten marble tubs now hidden in the U.S. Capitol Building's basement.

A fantastic array of trays and cables once whisked books over to the Capitol at 600 feet per minute.

A nostalgic bibliographic gem.

One of the largest artillery pieces in the world sits in a Washington D.C. parking lot.

This lovely pocket park is one of the most under appreciated in D.C.

While most wind tunnels test scale models, the "Cave of Winds" was large enough for actual airplanes.

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.

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

Washington's iconic carousel has a nice piece of Civil Rights history.

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

For 60 years, the academy had no permanent location until members voted Washington D.C. as its forever home.

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

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

A cavernous three-story, 43,800-square-foot basement that was forgotten about for 60 years.

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

There's an old indoor swimming pool hidden directly underneath the White House Press Briefing Room.

Disks are rolled out onto the south lawn to absorb the impact of Marine One's wheels like giant coffee coasters.

The innocent intentions of this monument are somewhat lost in the sculpture's muscled imagery.

A computer bug so primitive it was an actual insect.