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

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

Thousands of exquisitely carved stone water storage wells, hundreds of stone steps fill this exquisite medieval stepwell.

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

Tubing through a cave lit with glowworms is a magical underground experience.

Several plaster noses are hidden in plain sight around London's Soho neighborhood.

A special shop catering to the needs of things that go bump in the night, and also helps kids become writers.

A floating cat sanctuary on an Amsterdam canal.

A legendary speakeasy bookstore returns from the brink.

Perfectly preserved ancient monastery in an impossibly dramatic location on a rocky island in the Atlantic.

A massive underwater sinkhole made famous by Jacques Cousteau.

A modernist landscape of water and sci-fi concrete.

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

A museum dedicated to the history of a terrifying secret police is now held in their former headquarters.

A museum dedicated to the alleged Roswell Incident.

A self-built castle made by a mysterious man.

A huge musical sculpture and other art installations on the National Oceanic and Atmospheric Administration grounds.

This medieval castle overlooking the Elzbach river looks just like it did hundreds of years ago.

Giant busts of 42 U.S. presidents are sitting in a field in Virginia.

Take a drunken tour inside the world's largest known geode.

A swing to dangle you off the very edge.

More gold than anywhere else, ever.

This community on a small Venetian island has taken to painting their houses in bright neon hues.

Bioluminescent firefly squid light up this Japanese fishing port.