The remains of what was, not so long ago, the world's largest city.

The site of one of history's most indelible and horrific tragedies.

In the power of this waterfall, Alexander Hamilton saw the potential for industry.

A giant light 13 feet high shines near Thomas Edison's old Menlo Park lab.

This Hindu temple in suburban New Jersey is the largest in the United States and one of the largest in the world.

This elaborate High Victorian Gothic structure is one of the world's few 16-sided buildings.

The remains of a century-old mansion that met a fiery demise years after it was deserted.

This disastrous New Jersey safari park saw animal attacks, escapes, and disease before being abandoned.

A living museum dedicated to the legendary woodworker and his soulful furniture.

This huge, disused viaduct is now a crumbling concrete underworld of covered in years of graffiti.

A candle shop hiding a haunted basement once used as a monkey research lab.

Buildings that dynamite couldn't bring down were abandoned because of bathroom issues.

A mine fire has been burning under the deserted town since 1962, but this church is still going strong.

The only geyser in the state of Pennsylvania is caused by pressure from an abandoned coal mine outside of the ghost town Centralia.

This oldest brewery in the U.S. has lived through fire, Prohibition, and six generations of family ownership.

Outside a small brewery, a Gothic fountain that once provided water to thirsty horses.

This eerily well-preserved coal town was saved from destruction by a Sean Connery movie.

This jail which was in service for over a century is now open for curious visitors.

This curious fresh and salt water lake holds a secret that draws in deep divers from around the world.

A patch of Philippines forest devoted to saving the lives of an emotionally sensitive species of googly-eyed primates.

Bohol's unusually shaped hills turn brown in the summer months.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

Alexander Hamilton’s creation caused quite a bit of controversy.

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.