Hidden in the plaza next to a pizza shop is an amazing little oddities shop.

Strange beasts lurking in a garden are all that remain of a quirky, short-lived theme park.

Two men built this castle on the Florida coast as an artistic “landscape sculpture.”

The only Florida state park with publicly accessible caves.

This home is decked out like a psychedelic explosion of colors and bowling balls.

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

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

Two beautiful Victorian-era parks replete with ornamental waterfalls and lakes.

A winding cave grotto walkway built to provide employment for veterans after World War I.

This Norman castle has been the scene of assassination plots, religious persecution, and Nazi conspiracies throughout its long history.

A house of bones — but nobody is quite sure to whom they belong.

An avant-garde artist is survived by his seaside garden.

Also known as Rye Castle, this 13th-century fortification later became a prison and held one of Rye's most famous criminals.

This centuries-old hotel hides a network of secret cellars and passages once used by smugglers.

A beautiful ruin of a 14th-century Plantagenet castle built by a medieval mercenary.

The house that took a plunge into the facade of a museum.

A glimpse into the festive and private lives of medieval Europe.

This series of Baroque passageways in Vienna's cultural center mix old architecture with modern art.

A rooftop restaurant hides in plain sight atop Vienna's Palace of Justice.

Inside the corridors of this flea market, visitors are sure to find some obscure and odd treasures.

Beautiful Austrian natural history museum with carved ceilings and row after row of ancient taxidermy.

This cubist Vienna church building looks like some sort of alien stonehenge.

Macabre museum devoted to historical Viennese murders.

The final resting place for the remains of 143 Habsburg royalty.