This Great Depression-era creation was once known as the strangest house in the world.

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

World's first "penitentiary," meant to be humane, drove men insane.

This upscale streetwear store is hidden behind a fake Snapple machine in the back of a deli.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

Where manatees are the snowbird vacationers in these balmy Florida springs.

A hands-on traveling collection of the innovative devices of yesteryear.

Order scoops of pandan, lychee, and black sesame at this family-run institution.

A beautiful geyser under environmental threat.

The site of the climactic scene from the classic horror film is now a historic landmark.

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

Enormous lake at the bottom of a unique cave system.

A tiny theater hidden in an alley plays a constant stream of short silent films for anyone willing to peer through the peephole.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

The only swimming pool listed on the National Register of Historic Places is emptied and refilled each day with naturally filtered water.

The final resting place of New Orleans' most famous voodoo priestess.

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

Paranormal experiences in this hotel's room 217 led Stephen King to write "The Shining."

A collection of oddities including Dr. Kevorkian's suicide device, the Thanatron.

A layered tribute to the work of mosaicist Isaiah Zagar.

Manhattan’s Battery Park has a whimsical carousel full of spinning, glowing fish.

For two weeks every June, fireflies in the Smoky Mountains perform an astonishing light show.

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

A bizarre house filled with an astounding array of collections.