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

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

An unassuming, powerful monument north of the U.S. Capitol bears witness to the resilience of Japanese Americans during a time of grave injustice.

Once home to the largest photo service in the United States.

This nine-story building is the oldest standing skyscraper in D.C.

Beneath unsuspecting visitors feet, a capsule containing pieces of America’s civil rights history.

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

Literal "money laundering."

The first presidential bomb shelter was located in an old vault under the Treasury, connected to the White House via tunnel.

Where the U.S. government kept its actual treasure, before Fort Knox.

The bank that helped fund the Mexican-American War and the purchase of Alaska met its downfall after helping Augusto Pinochet launder money.

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

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

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

After James Madison's death, his wife and former First Lady Dolley Madison lived in this yellow building near the White House.

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

Four bald cypress trees in Lafayette Square, across from the White House, mark the southern edge of a 100,000 year old cypress swamp.

The sculptor was instructed to add “stallion attributes” to the general's bronze mare.

The largest public collection of roses in the United States.

At this rural museum, visitors can experience "Boomtown U.S.A.," a lifelike re-creation of an oil boomtown in the 1930s.

A collection of obscure and vintage equipment used for television, film, and radio.

This small town Texas cemetery is said to be the burial site of a UFO pilot who crashed in the 1800s.

In Paradise Cemetery resides a mysterious headstone with a strange inscription.

A town pays homage to its namesake.