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

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

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

This statue of the "father of television" stands prominently in the United States Capitol.

This taxidermy horse was a Civil War hero.

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

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

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

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

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

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

This unique museum cafeteria showcases the history and regional diversity of African American cuisine.

An 18-mile-long tunnel for sewage waste will soon wind within the bowels of Washington, D.C.

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

One critic described it as "middle Mussolini, early Ramses, and late Neiman-Marcus." Another called it an architectural "natural disaster."

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

Corn-inthian columns with a uniquely American take on neoclassical architecture.

A line of blue paint marks the route of the inaugural parade.

Part of a WWII submarine is lurking outside the Washington Navy Yard parking lot.

This grisly headstone doesn’t seem to be resting in peace.

A promising candidate for the lost rock laid by George Washington was unearthed, but the hunt is still on.

Every drop of D.C. tap water flows through this old waterworks.

More than 500 unique and specially designed cases collected by D.C.'s "Harmonica Case Man."

An obscure federal monument honors the French diplomat who served as Ambassador to the U.S. during WWI.