After years of slow decline, a derelict Gothic castle is now being restored to life.

This Welsh village gave itself a ridiculous name in a publicity stunt a century ahead of its time.

The alleged birthplace of Lady Jane Grey, who was executed at age 16 for claiming the throne of England.

The jewel of western Mexico's archaeological legacy is this tiered circular pyramid now covered in grass.

Tucked along a river are enigmatic stone carvings created thousands of years ago.

A lovers' beach, tucked below the surface of the island, provides a safe haven for romance.

Near the former site of numerous witch burnings, this lavish Edinburgh mainstay pays homage to Scotland's brutal history.

A statue in the heart of Edinburgh honors a bear that served in the Polish military during World War II.

A church of bones, decorated with 40,000 human skeletons.

Medicinal spa created with the discharge from a geothermal energy plant.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

This massive fiberglass Gulliver turns every visitor into a Lilliputian.

Of the many chalices in the running for the Holy Grail, this one in Valencia Cathedral sure looks the part.

A centuries-old complex of hand-dug stone chambers has sheltered locals in times of trouble.

Science fiction's grandfather has a fittingly marvelous tomb.

A rare example of World War I trenches from the British front.

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

Ruined 11th century abbey built by King David I in Edinburgh, Scotland.

17th century streets hidden under Edinburgh were once a breeding ground for the black death.

Bring your own cardboard to the slippery slopes of concrete hidden in a neighborhood park.

An artsy hidden staircase leads to breathtaking views of San Francisco.

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

A huge musical instrument played by the ocean.

When you can't get to the Pacific, just go to Florida.