One of the only Florida forts to remain in the hands of the Union all through the Civil War still stands as a historic stronghold.

One man has carved a number of natural New Mexico caves into psychedelic sandstone temples.

A stately palace has been converted into the world's largest cannabis museum.

An unusual stroll through gentlemen's erotica demonstrates that pornography is timeless.

Legions of Roman soldiers bathed in this ancient spa complex under a Budapest transit station.

A series of caves under Castle Hill that once held the prisoner Vlad Tepes, better known as Count Dracula.

Their motto is, "We've been bonkers for hats even longer than you have!"

Shakespeare has been brought to life in this open air theater for the better part of a century.

Featuring a casually threatening atmosphere along with dessert and coffee to die for.

The magic's in the hole!

Private collection of art inspired by cabinets of curiosity.

The first piece of public art dedicated to LGBT rights.

The oldest living organism in New York City. Maybe.

Nikola Tesla's former home contains an homage hidden from plain sight.

A collection of fanzines, recordings, and documents detailing the rise and influence of the feminist punk movement.

A charming "tea atelier" hidden away in Greenpoint, Brooklyn.

A band of aerialists and circus performers putting on incredible shows in East Williamsburg.

Neon signs that grace the windows of Bergdorf Goodman's and Tiffany & Co. come from this studio in Brooklyn.

This hidden library of physiological ephemera contains centuries worth of knowledge on the vim and viscera of the human body.

Sniff the Titan Arum's rotting flesh.

New York City's only preserved family home from the 19th century.

Cryptic messages embedded in the New York City sidewalk.

A bit of retro transportation flair preserved in the world's largest department store.

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