Curious cave that stays a cool 56 degrees all year long.

A creepy sculpture of a decapitated head invites viewers to see St. Louis through its empty eyes.

Speak to a companion on the other side of the room loud and clear through this architectural anomaly.

Where Eunice Williams was murdered by natives, and where locals say her ghost still haunts.

The only American museum exclusively dedicated to the exhibition of gloves.

A very classy 1920s-era bar right in Grand Central Station.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

A Manhattan office building is home to the world's largest chess board.

Discover the taste of mold.

One of the earliest bowling lanes in the U.S. doubled as a sewing school during a time when women had little job opportunity.

This natural rock "church" might not be a proper chapel but that doesn't mean it's not beautiful.

A long abandoned hospital building on the outskirts of NYC.

A once grand hotel is being retaken by the wilderness it once capitalized on.

This lovely little pond is named after the hundreds of soldiers' corpses that were rolled into the waters during the French-Indian War.

A CT scan revealed the identity of this 3,000-year-old mummy that everyone erroneously thought was female.

A hamlet full of permanent Christmas spirit holds one of the earliest theme parks in the United States.