This simple convenience store sits on the location where the Ouija board was named—and has a plaque to prove it.

This free, take-a-book shop seems like a trick but isn't.

The final resting place of the tragic king and queen of the Jazz Age is tucked away in a small Maryland graveyard.

Mysterious 500-year-old tapestries depict a unicorn hunt.

Tucked in the back of this amazing antique store is an important piece of medical history.

The final resting place of many of New Jersey's most famous residents, including U.S. history's most in-vogue antagonist, Aaron Burr.

Series of storm drains connected to a dark urban legend.

A wunderkammer hidden on the top floor of the Hartford statehouse.

More than a century of radio history is told in these displays.

The Boston square dedicated to the dark poet who was born nearby.

Site of a famous 19th-century transcendentalist utopian community, now abandoned.

A derelict bit of transportation infrastructure hidden in the woods.

An atomic bomb-proof strongbox protects the U.S. Constitution from terrorists and thieves.

A wondrous old library overlooking the nation's capital.

This imposing Masonic temple a mile from the White House was the first public library in Washington, D.C.

A nostalgic bibliographic gem.

Behind a bodega is a small museum of relics and ephemera showcasing the history of New York.

Literally a million fascinating cartographic artifacts are held in this sprawling university collection.

This rare collection of human deformities displays fetuses with two faces, one eye, and "mermaid" legs.