An FDR-era tuberculosis sanatorium has stood abandoned in the suburbs of the U.S. capital for over 30 years.

Ship skeletons haunt Baltimore's waterways.

An eerie, abandoned military base engulfed by nature and graffiti is now home to a local park.

World War II bunker still standing on the New Jersey beach.

Captain John Smith thought these cliffs were amazing in 1608 but sharks thought so 20 million years before him.

This scenic Maryland park was the site of one of the worst prison camps of the Civil War.

World War II-era bunkers are hidden under the beaches of this picturesque park, which is still scattered with wartime watchtowers.

A wrecked ship dating back to the American Revolution was only recently discovered off the Delaware coast.

The historic home still shows the scars from a little run-in with the British in 1813.

The United States' oldest Episcopal church still in active use.

Historic home of America's sweetheart sharpshooter, Annie Oakley.