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

In an alcove of this historic library, you can find murals painted in the 1930s by an artist who went on to create some of Disney's most iconic animated films.

This bridge over D.C.'s Rock Creek Park is sometimes called the "Buffalo Bridge" because of its four buffalo sculptures, which were cast from a single piece of bronze.

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

The hippo that stands on this university campus was once a drunken flea market purchase.

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

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

Washington D.C.'s most famous pianist, composer, and bandleader still tickles the ivories outside Howard Theater.

A street in front of NASA's D.C. headquarters has been named in honor of the Black women who were essential to early spaceflight.

Railroad officials in the early 1900s sought to spare travelers the sight of Roman soldiers’ private parts.

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

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

The story behind this beloved toy—named for Theodore Roosevelt and owned by his grandson—is more complicated than you might guess.

Depending on who you ask, this controversial treehouse is either a charmingly creative child's playhouse or an illegal encroachment on public land.

Garments from across the globe call this hidden gem home.

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

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

A tribute to the pop culture icon overlooks this Washington D.C. intersection.

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

The towering figures were created from the cemetery's fallen old-growth trees.

For 60 years, the academy had no permanent location until members voted Washington D.C. as its forever home.

D.C.'s first central library was born out of a chance encounter with the philanthropist whose name it bears.

Perhaps the most scandalous statue of America's first president.

A hoard of sky catalogs, astrophysical journals, even the works of Galileo and Copernicus.