A hidden medieval crypt where a famous legend says the devil used to teach black magic.

Crossing this suspension bridge feels like walking through the sky, a fitting tribute to the head of the Apollo program.

The Roman Emperor's lost summer home and grotto full of enormous sculptures sit along the Italian seashore.

An emerald-green grotto just a short trip from Austin.

The only diamond mine in the world where you can keep what you find.

One of New York's best collections of pinball is hidden in a secret bar in the back of this laundromat.

Dig for your own trilobites in this goldmine of invertebrates.

More gold than anywhere else, ever.

The name of this tiny pocket park tucked between two buildings on Manhattan's Upper West Side is Latin for its location: "seventy-one."

A restaurant on Staten Island showcases a different grandmother’s cooking every night.