Home of the physician who set the leg of John Wilkes Booth after the Lincoln assassination.

The remnants of a wooden-hulled fleet built and abandoned in WWI, now home to a thriving ecosystem.

Members of Congress have traveled between the buildings on Capitol Hill for a century hidden from tourists, press, and storm clouds.

In the basement of the U.S. Capitol Building is a hidden storage room full of ornate floor tiles leftover from the 1850s.

Daredevil repair workers can worm their way out the access hatch, loop ropes over the apex and rappel down the monument.

An obscure public service from the U.S. government that redeems burnt, moldy, and soiled old greenbacks.

When it opened during the final years of the embargo, all the drinks and cigars were free.

Crammed into a Baltimore row house is an oddities shop that sells everything from skulls to dead insects.

The famous abolitionist’s preserved estate is one of Washington's finest monuments to its great Black citizens.

A cavernous three-story, 43,800-square-foot basement that was forgotten about for 60 years.

A derelict bit of transportation infrastructure hidden in the woods.

The United States Capitol's former columns still stand.

A Civil War fort in the middle of Washington, D.C. has been swallowed by a forest.