This taxidermy horse was a Civil War hero.

Sit where JFK proposed to Jackie or where Nixon dined on meatloaf at this storied pub.

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

A hidden passageway now marks the site of an assassination attempt on Ronald Reagan that some say broke a 140-year-old curse.

Daredevil repair workers can worm their way out the access hatch, loop ropes over the apex and rappel down the monument.

There just so happens to be a court even higher than the U.S Supreme Court: a basketball court in the building itself.

Before founding the American Red Cross, Clara Barton had a tremendous humanitarian impact by locating thousands of missing soldiers.

The preamble to the U.S. Constitution written entirely from vanity license plates hangs in the Smithsonian museum.

Helen Keller once broke ground on this historic center for the study of technologies to benefit the hearing impaired.

A historic arena where the Beatles played their first concert in the U.S.

Legend has it that President Grant’s frequent drinking in the lobby gave rise to the term “lobbyist.”

Members of Congress have traveled between the buildings on Capitol Hill for a century hidden from tourists, press, and storm clouds.

The remains of Martha, the last known passenger pigeon, serve as a tool to educate about conservation.

The "lovely red Vega" of the legendary record-settling pilot.

A hoard of sky catalogs, astrophysical journals, even the works of Galileo and Copernicus.

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

Cold War intelligence agents monitored communist embassies from an attic in a former pigeon coop.

Dr Barnes' $25 billion private collection of art and arboretum.

These tourist trap caverns are said to be the former home of a legendary Pennsylvania Hermit.

A restored Pittsburgh house of God has been converted to a marvelous house of suds.

An abandoned stretch of highway, deteriorating next to the operational one.

Mysterious rocks that ring musically when struck.

Hellam Township is reputed to feature seven remote gates, which when passed through in the right order, open an entrance to hell.