This historic fort spans more the 300 years.

Dedicated to the art and science of glass in equal measure, this space is as much laboratory as museum.

A physical catalog of ceramics made by the now-defunct Celadon Terra Cotta company.

This collection started by a Cornell professor once held more than 600 human brain specimens, including the one that belonged to its founder.

In upstate New York, gorgeous waterfalls and a watermill are slowly being reclaimed by nature.

This American Civil War-era fort still stands near the border between Washington, D.C. and Maryland.

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

The revival of a classic Art Deco theater.

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.

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

The final residence of an educator, civil rights leader, and presidential advisor was also the first headquarters of the National Council of Negro Women.

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

On the Fourth of July this area will transform into a Pompeii-like storm of falling embers and ash.

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

"Congress may voluntarily remain in session throughout the summer, in order that our Congressmen may be protected from the intolerable discomforts and dangers of the ordinary outdoor weather!”

A derelict bit of infrastructure from the canal that once ran through D.C. is landlocked in the heart of the city.

There’s a special club house at the top for the bell ringers.

The discovery site of the "Capitalsaurus," the official dinosaur of Washington, D.C.

Go take a picture with the inventor of the daguerreotype photographic process.

This poor little statue is the most vandalized memorial in Washington.

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

This lovely pocket park is one of the most under appreciated in D.C.

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.