The verdant mossy ruins of a Franciscan monastery lie in the remote Sintra hills awaiting exploration.

In Portugal, a secluded stretch of untouched natural beauty hides at the bottom of a steep hill.

At night, bats patrol this magnificent 18th-century space in search of book-eating pests.

This stop on the Camino de Santiago stands high above the underwater ruins of a medieval town.

The remains of an abandoned dinosaur theme park litter the woods just off the highway.

This ancient Bedfordshire church was abandoned when the village's population slowly began migrating to new towns.

A hill carving of the legendary dragon that terrorized the village of Bures in the Middle Ages.

The red letters in the literary pavement leading to the library form a mysterious code.

Gutted during the Liverpool Blitz, this architectural husk has been left destroyed in honor of the dead.

Charles Dickens described the concert room in this amazing Victorian hall as "the most perfect room in the world."

An abandoned amusement park hints at the twisted history of the Newfoundland Railway.

A chaotic collection of maritime artifacts, art, and really whatever else happens to be around.

A curious friendship between two inanimate ladies.

The last slot car racing arcade in Brooklyn is keeping the dream of speedy little autos alive.

This ancient statue of Dionysus lies unfinished and abandoned in one of Greece's oldest quarries.

Perched on a spindly rock spire in a Greek archipelago, this lighthouse would make a perfect wizard's tower.

Thousands of rusting train cars have been slowly falling apart on the edge of Greece's second largest city.

This professional clown's home is an outsider art wonderland.

Current docking place of the SS United States, the fastest transatlantic ocean liner.

A beautiful Victorian-era cemetery, complete with a miniature village.

An enormous, inside-out glass globe built in 1935.

This kitschy tavern is also home to rare early editions of "Treasure Island."

One of the earliest bowling lanes in the U.S. doubled as a sewing school during a time when women had little job opportunity.

A Wisconsin kitsch palace from the 1930s lives its second life in 21st-century Brooklyn.