The oldest Marian image in the Canary Islands still impresses people nearly half a millennium later.

This palatial building has lived many lives as a convent, prison, cultural center, state archives, and government offices.

A site outside Pedraza, Spain where a plaque tells a tale of seven-legged creatures that were said to have once lived in the area—in the fictional world of Kcymaerxthaere.

The building that houses this museum is as historic as its collection.

The grave of a man who spent 23 days trapped underground after a mine collapse.

Climb to the top of this windmill for a scenic panorama and up-close look at wind energy production.

Dedicated to preserving railway history from across Ireland.

Built during the Scottish boom in the oil industry, the village was never inhabited.

Electricity pylon standing in the middle of a shelter.

Believed to be the first museum dedicated to the films in the world.

A monument to the center of the North American continent may be off by a few miles.

This Roman arch marks the location of an ancient gate at one of the Seven Hills of Rome.

One of the most important yet well-hidden museums dedicated to the history of medicine.

A forgotten "city of water" underneath the famous Trevi district.

Inside this McDonald's you can dine on your Big Mac and fries next to a 2,500-year-old Roman wall.

The Pope’s secret escape route.

A Nesting Doll of Churches.

The final resting place of the poets Shelley and Keats.

Architectureal fantasy quarter of Rome.

This hidden Art Nouveau courtyard is an opulent feast for the eyes.

The yawning maw of this pagan visage is said to bite off the hands of liars.

Rome's semi-secret peephole vista is also a former Crusader stronghold.

A copy of the famous statue can be found in this Florence piazza, along with one of the most breathtaking views of the city below.

Overlooked amid the tourist bustle of Florence, this museum is dedicated to the craft of stone inlay.