The museum calls itself the "National Museum of the Paranormal" and is full of eerie oddities.

A particularly creepy abandoned hospital that sparks interest for lovers of the supernatural.

This abandoned amusement park was built on a site with a dark history.

This advertisement for talcum powder was painted on the rock face and has since defied removal.

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

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

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

Built in 1815, the stabilized ruins of the grist mill and sawmill are now gated, but interpretive displays on the features and functions of the mill preserve its history.

The wooded estate of the Forest Service employee responsible for D.C.’s cherry blossom trees.

Surrounded by traditional homes, this Tolkien-esque dwelling stands out on a quiet street in suburban Maryland.

A small 19th-century graveyard tucked away in the middle of a suburban neighborhood.

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

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 labor of love built by local hang-gliding enthusiasts, this ideal launch spot was outlawed by the authorities and has since been largely abandoned.

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

A pre-Industrial Age iron furnace and the site of a nearly-forgotten piece of Black history.