This taxidermy horse was a Civil War hero.

Also known as the Founding Church of Scientology.

The only tennis court that falls under the jurisdiction of the central bank.

The tunnel under the Capitol Building where Congress takes out its trash.

This restaurant has been a haven for D.C.'s LGBTQ community since the 1950s.

A memorial to a shareholder activist feared by CEOs around the United States.

The grand marble structure next to the White House is Andrew Carnegie's temple to Pan-American diplomacy.

After his presidency, George Washington planned to live only a few blocks from the Capitol building.

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

D.C. once had its own tiny rival to the New York Stock Exchange.

The U.S. Navy’s preposterously detailed mini battleship took 77,000 hours to complete.

An ear-piercing buzzer calls lawmakers to a vote with a series of long and short rings to form coded messages.

A replica of the famous memorial statue at the Normandy American Cemetery hides in an office building in downtown D.C.

A surprising, but overlooked example of geology in the middle of the nation’s capital.

The first memorial dedicated solely to the Black troops who fought for the Union.

This unassuming passageway played a key role in one of the most important events in U.S. history.

On the Fourth of July this area will transform into a Pompeii-like storm of falling embers and ash.

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

The 28,000-year-old specimen is remarkably intact.

An overlooked tribute to one of the most important peace deals in American history.

The iconic D.C. restaurant where the Cuban Missile Crisis was negotiated, now a Walgreens.

A public art jibe at one of the United States’ oldest and longest-serving senators.

The district's only illusionarium supports free writing programs for local students with every purchase.

A secret greenspace hides atop a Capitol parking garage.