The oldest building in the District of Columbia was preserved because of a mistaken connection to George Washington.

A museum cafe showcases Native American dishes and indigenous ingredients from across the Western Hemisphere.

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

A derelict bit of transportation infrastructure hidden in the woods.

A hidden gem on the lawn of the U.S. Capitol Building designed by landscape architect Frederick Law Olmsted.

During the Industrial Revolution this “Temple of Invention” was full of intricate miniature machines and gadgets.

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

Fittingly, America's museum of architecture is itself a magnificently designed old building.

With over 100 jam-packed rooms to explore plus elaborate tea services and events, the Mansion on O Street is a hidden treasure.

A historic neighborhood church is reborn as a psychedelic arts collective.

One of the dwarven trees dates back to 1625 and survived the Hiroshima bombing.

Long-abandoned trolley tunnels just a mile away from the White House are turning into an art space.

The site of the climactic scene from the classic horror film is now a historic landmark.

Franciscan monks created a facsimile of the Holy Land for North Americans who couldn’t afford the trip overseas.

The United States Capitol's former columns still stand.

Home to items never before seen by the public.

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

Hidden in magnificent rolling countryside, see what may be the largest modern stone circle in the world at Wisconsin's very own "Stonehenge”

This women-run eatery and cooking school is putting India's long-neglected tribal cuisines back on the menu.

This whimsical garden filled with fairies and incredible creatures has been enchanting children—and adults—since the 1970s.

A monument to the more than one million enslaved Africans deported from the port of Ouidah.

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

This former monastery in Vietnam now houses a chocolate shop and museum filled with centuries-old taxidermy specimens.

A window into the luxurious lives led by the landed gentry of Minsk before the 1917 Revolution.