A research lab and hands-on museum where visitors can experiment with retro technology.

Thanks to a quirk of elevation this gift shop produces magic doughnuts that are found nowhere else on Earth.

An annual festival celebrating Colorado's most famous frozen corpse.

The world's largest carnivore sanctuary is home to over 450 meat-eating rescues.

The hallucinogenic center of the ancient world.

Tucked away amidst some of the most famous addresses in the world is New York's only fraction of a street.

The name of this famed hospital was once a byword for the horrors of medical and psychiatric care.

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

The oldest surviving bridge in New York City, which reopened to pedestrians in 2015.

A virtually untouched "home on the hill" for the flora and fauna of Rhode Island.

A crumbling stone stable and carriage house are all that remain of a manse that was once filled with Egyptian artifacts.

The one-stop shop for all of your superhero (or evil arch-nemesis) needs.

The feral felines of Roosevelt Island have a small army of allies and an abandoned hospital all to themselves.

This abandoned subway station beneath the Waldorf-Astoria hotel is allegedly used to secretly transport presidents.

A treasure trove of artifacts, books, and artwork from the "golden age" of exploration.

A labor of love and aviation in Nigeria.