A haunting tribute to pioneering photographer Clover Adams.

Largest Roman Catholic church in North America.

Art deco landmark on the outskirts of Washington, D.C.

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

The highest point in Maryland is only accessible by hiking through another state.

Hellam Township is reputed to feature seven remote gates, which when passed through in the right order, open an entrance to hell.

An outlandish shoe shaped house built by an eccentric millionaire.

The Home and murder site of the witch of Rehmeyers Hollow.

Over 100 concrete munitions bunkers are all that remain of a Pennsylvanian village seized by the US government.

Dedicated to the art and science of glass in equal measure, this space is as much laboratory as museum.

A collection of unique outdoor sculptures surounded by the beauty of nature.

One of many reminders of Tesla's scientific contributions overlooks the falls which inspired him.

This Niagara Falls tourist trap is a world bright with neon and curiosities that will inspire love, hate, or a mixture of both.

Toxic waste disaster that founded the Superfund program.

A natural gas leak provides a flickering flame beneath a waterfall.

The highest point in Delaware is located under a trailer so this marker across the street will have to do.

Mysterious rocks that ring musically when struck.

A dramatic, 360-degree recreation of Pickett's Charge in the Civil War.

America's Most Wanted's set resides in this tribute to the history of crime and punishment.

Daily lunch spot for many of Washington, D.C.'s cab drivers.

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

An astounding collection of medical specimens, including bits of President Lincoln.

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

Tiny observatory made big contributions to the study of the Earth's motion.