The haunting "Hell House Altar" is one of the few remnants of an abandoned college that has been a magnet for local legends.

Built in 1945, this historic train station has a new lease on life with its baggage area serving as an event space.

The hidden ruins of a mill that is linked to an attempt to assassinate the vice president of the United States.

Just outside the Naval Academy, Hell Point is a historical marker that could easily be the point where failed students wait for the bus.

Unannounced visitors are now welcome at the site of the largest Prohibition-era bootlegging operation in the region.

One of the oldest standing structures in Montgomery County, Maryland.

This lovely tree was a thank you gift from the man known as "Public Enemy No.1."

Once a thriving business district, this former shopping area is now an urban ghost town in the heart of the city.

Remains of a historic fountain that was mysteriously lost in the demolition of a D.C. traffic circle.

This ruined quarry once produced the distinctive red sandstone used for construction projects in Washington, D.C.

A remarkable time capsule of American manufacturing deep in Maryland coal country.

After hundreds of years of settlement, this once-bustling fishing village sunk into the Chesapeake Bay.

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

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

Ship skeletons haunt Baltimore's waterways.

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

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

A girls' boarding school inspired by the Chicago World's Fair, once abandoned, now restored to strange and scenic glory.

The ruins of this long-abandoned unsuccessful gold mine can still be found.

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

An intricately designed junk art house with four extravagant junk art cars hidden in the suburbs.

A priceless collection of the Nation's cryptologic history.

A hidden alley in urban Baltimore is a haven for graffiti artists.

A local farm's collection of unusual structures from a now defunct storybook amusement park.