Two men, two visionaries of Venice Beach, one little hotel that smells like cookies.

This concrete tangle of square pipes has stood as a proud thorn in the city's side since the '70s.

Tiki luxury on Nob Hill.

A homage to the King at the hotel where he revived his career.

Temporary Burning Man sculpture made of two 18-wheelers.

James Turrell's total color immersion art installation, hidden on the top floor of a luxury handbag shop.

These 1,500-year-old remains were found in a mysterious Anglo-Saxon mass grave.

This once-derelict building is now one of the most beautiful bookstores in the world.

A stunning 18th century pharmacy and medieval chemist's collection.

Known as the Hintz House, this medieval pharmacy has been an apothecary's haven for nearly 450 years.

Even drowned in an ocean of toxic waste, the remnants of this Romanian village stand tall.

This snug medieval lane is one of the narrowest streets in the world.

Romania's "Red Ravine" is a little-known natural wonder that bears a resemblance to the Grand Canyon.

The original movie set for the home of 'Star Wars' hero Luke Skywalker.

When a supermarket opened up shop within a medieval building it became protected by UNESCO on a technicality.

Large, airy hallways hide within an impenetrable fortress that beckons urban explorers.

A museum dedicated to a secret military hospital hidden beneath a castle in Budapest.

Sitting beneath an unremarkable residential building is a museum devoted to classic Pinball.

The abandoned "Red Star Train Graveyard" is the final rusting place for precious artifacts of train history.

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

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

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

Hidden beneath a restaurant, underground tunnels tell the story of Malta’s tragic role in World War II.

This prison on the Maltese island of Gozo is almost 500 years old, and they have the graffiti to prove it.