An exact replica of a colossal Olmec head sits atop a pyramid within a Madrid traffic circle.

The lengthy skeleton of one of the tallest Spaniards of all time is on display in Madrid.

This macabre masterpiece of a mural is one of Francisco Goya's "Black Paintings."

The only urban monument in the world designed by the great surrealist painter Salvador Dalí.

In the fictional world of Kcymaerxthaere, celestial wonders marked a portal to a powerful route of travel at this site in Madrid, Spain.

The earliest known map to show America, discovered by accident at a Paris bookshop.

Its appearance in "Game of Thrones" may spur on the long-awaited restoration of this medieval shipyard.

Hidden behind a wall, Spanish nuns distribute their signature sweets on a revolving tray.

A secluded art gallery hidden within the cellars beneath Tallinn’s medieval monastery.

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

This seaside Italian village doesn't just look Escher-esque, it actually inspired the mind-bending artist.

This futuristically sylvan church is a glass-enclosed marvel of modern architecture.

The site of Japan's first major environmental disaster.

A granite waterfall cascading down is one of the highest multi-tiered falls in the state.

Aqua white sand highlighted with fiery red rocks.

The once-dying town of Sheffield, Tasmania has reinvented itself as a village of painted wonders.

A huge maze complex and whimsical miniature village in Tasmania.

For a century, the tallest building in Tasmania was a tower built to manufacture ammunition.

The world's tallest shot tower—maybe.

This controversial museum includes such detested exhibits as a chocolate suicide bomber and fecal-smelling digestion machine.

This small museum in a former church crypt contains artifacts of the Elephant Man, Jack the Ripper and Florence Nightingale.

An Italian hillside ghost town.

One of Ireland's most infamous prisons for rebels including men, women and children.

The highest peak in the United Kingdom has a history of physics, specters, and a pilgrimage of strange objects.