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

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

A super-sized promotional trick that is now a D.C. landmark.

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

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

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

A brass plaque dedicated to a convicted cannibal hangs in the National Press Club, and that's not even the craziest part of the story.

Housing the National Women's Party since 1929, this historic house is now a monument to the fight for gender equality.

Literal "money laundering."

A three-story tower of books about Abraham Lincoln is one of the more unusual monuments to the president.

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

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

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

This sandwich shop has a century-old elevator behind a sheet of plexiglass.

The fountains of the U.S. Navy Memorial are annually salted with water from the Seven Seas as part of a nautical ritual.

A nostalgic bibliographic gem.

A much-maligned monument to teetotalism.

It was once the base for a series of domestic terror attacks.

An original apothecary from 1792.

One of the most influential presidents in U.S. history wanted only this plain, elegant monument as his lasting memorial.

A monument in Washington D.C. marks the spot from which all other roads were supposed to stem.

A muscular Art Deco monument represents the struggle between regulators and unbridled markets.

A former major munitions plant that has been converted into a sprawling art space.

The famous abolitionist’s preserved estate is one of Washington's finest monuments to its great Black citizens.