A monument to Poland's famous alleged UFO abduction case.

Carved by a waterfall in a hard-to-reach rock formation, this heart-shaped rock has inspired romantics for decades.

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

The fountain marks the area where hundreds of accused witches were burned at the stake.

Welcome to old Florida, where a 1940s mermaid show is still enchanting visitors.

This naturally-sourced hot spring is now home to a clothing-optional resort.

A Bibliophile's Dream.

An island filled with hundreds of hanging, decomposing, decapitated dolls.

It's not hard to see why the historic Peabody Conservatory of Music's library has been described as a "cathedral of books."

One of the oldest scientific gardens in Britain, containing more than 13,302 plant species in its core collection.

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

Hidden in an ordinary Midtown building is a one-room museum dedicated to the greatest escape artist.

An acoustic anomaly with a mysterious cause.

Bioluminescent firefly squid light up this Japanese fishing port.

A room in New York City that contains 250 cubic yards of dirt worth a million dollars.

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

The oldest hotel in the world has been operated by the same family for over 1,300 years, even catering to samurai.

One person's lost luggage is another person's treasure.

The original "capsule building" is a masterpiece of Metabolist architecture.

A counter-culture bookstore like no other hides in plain sight in the streets of Paris.

Collapsing castle on the Hudson river was once the storage site of military surplus business.

The 10,000 Torii shrine.

A small island less than half a mile from Venice is a forbidden island with a dark and twisted past.

Ride the subways of yesteryear.