Preserved Inca city and site of the last Inca stronghold against the Spanish conquistadors.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

A relic of FDR's brief foray into utopian urban planning.

Two dozen pinball games hidden away inside a most unlikely location.

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

A terrace reminiscent of Rome's Spanish Steps is tucked away in a little park in Washington, D.C.

A gift from Japan, 17th-century lantern stands among the cherry trees at D.C.'s Tidal Basin.

The only female equestrian statue in Washington, D.C. is a 15th-century French heroine.

This rowhouse doubles as one of the most photographed spots in the nation's capital.

The revival of a classic Art Deco theater.

One of the three perfect vellum copies of this historic book known to exist is on display in a specially-designed case.

Outside the Department of Transportation, a collection of artifacts honors the history of how we get around.

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

This fertility idol of questionable authenticity inspired an iconic Indiana Jones artifact.

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

An overlooked memorial honoring the local Washington residents who died in World War I.

The first memorial dedicated solely to the Black troops who fought for the Union.

The little-known, 300-year history of the area includes former lives as a bustling tobacco port, parking lot, and industrial dump.

Look closely and you’ll notice that the color changes a third of the way up the tower.

One of the largest artillery pieces in the world sits in a Washington D.C. parking lot.

A gorgeous mural outside a beloved D.C. restaurant pays homage to famous Black Americans.

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

A little marble compass above George Washington's (empty) tomb in the Capitol marks where D.C.'s four quadrants intersect.

Washington's iconic carousel has a nice piece of Civil Rights history.