An emporium for the weird, creepy, rare, and just plain gross.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

The mounds at this site were reconstructed with the help of archaeologists and historians.

The largest earthwork effigy in the world.

The world's longest known cave system.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

The last remaining vestige of a popular 1999 public art display.

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

This historic hotel invented the chocolate brownie.

This whimsical Oz-themed park had a wonderful impact on the surrounding neighborhood.

This coffee shop lies hidden beneath a historic church.

These pretty kitties killed and ate as many as 135 railway workers.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

Every equinox this Maya pyramid puts on a spooky ancient light show.

Few of the many visitors to this resort town know of its hidden Maya ruins.

Yo, Adrian!

This Philly cemetery is the eternal home of many famous area residents, including Rocky Balboa's wife.

Florida might be at its most surreal in this museum devoted to the famed Spanish artist.

Eighty million natural history specimens call this gargantuan museum home.

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

The colorful, smiling concrete silos of Vancouver.

Surprisingly delicious Asian-style hot dogs.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

This soda factory is one of the last in America to use real cane sugar despite the protestations of Dr Pepper.