Standing for over 200 years, the abandoned home of a Revolutionary War hero and later a succession of prison superintendents.

This field of concrete was once an active defense site armed with nuclear warheads.

A weathered, American Foursquare-style house originally built for lumber merchant William Wimsatt.

The last of nine massive kilns that produced many of the red bricks for buildings in Washington, D.C. and northern Virginia in the early 20th century.

One of the oldest used bookstores in the U.S. has been selling antiquarian treasures since 1825.

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

Home to items never before seen by the public.

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

The United States Capitol's former columns still stand.

Once home to seven different roller coasters, Glen Echo has undergone many transformations since its founding in 1891.

This general store is more than a century old and home to various oddities and antiques.

A giant time capsule not scheduled to be cored until 2040.

A star fort along the C&O Canal in western Maryland that protected America in three wars.

Berkeley Hot Springs presents to you "the only outdoor monument to presidential bathing."

Despite violent work crews and massive delays this abandoned canal tunnel was built to last into the modern day.

A former major munitions plant that has been converted into a sprawling art space.

This war hero's old shop remembers the fine line between medicine and quackery during the Revolutionary War.

The narrowest house in America is seven feet of pure spite.

The bank that helped fund the Mexican-American War and the purchase of Alaska met its downfall after helping Augusto Pinochet launder money.

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

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

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

This seemingly out-of-place gas station by the Watergate hotel was once described as the most expensive gas station in the world.

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