A rare example of a rural school in Washington, D.C.

This small hilltop church weaves the urban history of Washington, D.C. with the national history of the United States.

One of the last mosaic tile facades found in the city.

The legacy of a wealthy executive and his wife, this little-known art museum features works by Picasso, Monet, Renoir, Cezanne, and more.

A brass and marble scale model of the solar system embedded in the concrete.

Sip creative cocktails in the former vault of the Riggs Bank.

Garments from across the globe call this hidden gem home.

The National Park Service’s best-kept secret with views that rival any in D.C.

Coins and medals straight from the mint await visitors to this shop in the nation's capital.

An echo chamber with a waterfall wrapped around its base at the Embassy of Canada in Washington, D.C.

An amazing example of early-20th-century architecture, this church features marble transported from Utah.

This groundbreaking 16th-century map is known as "America's birth certificate."

Once a sewer culvert, this road tunnel now offers cyclists and pedestrians a subterranean stroll under the C&O Canal.

The word "Watergate" will forever be associated with the infamous scandal in 1972, but this fountain is famous in its own right.

A secret greenspace hides atop a Capitol parking garage.

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

Through the decades, Black music stars have performed at this historic hub for music and the arts.

Where you can hail your favorite fictional commanders-in-chief.

These abandoned waterworks are crumbling into the Potomac River.

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

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

Also known as the Founding Church of Scientology.

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

Daily lunch spot for many of Washington, D.C.'s cab drivers.