The remains of a sunken military ship wreck visible through clear water.

Humble beginnings for one of the world's most famous scientists.

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

Formerly Yugoslavia's "forbidden island," this sleepy little city still holds the abandoned remains of military strongholds.

An ethereal glowing blue ocean cave in Croatia.

This restored Portuguese cafe may well be the most beautiful place in the world to grab a Big Mac.

When Azorean green tea meets volcanic hot springs water, a luminous brew is born.

Portugal’s highest lighthouse has one of the most impressive focal planes in the world.

A plaque installed underwater marks the fall of a royal family from an imagined parallel universe—part of a globe-spanning art project.

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

A centuries-old iron mine is now a paradise for explorers, divers, and spelunkers.

A red-brick beacon stands against the tempestuous Atlantic, on the windiest site in the United Kingdom.

Spend the night in this formerly abandoned traditional Scottish village.

The mysterious megaliths have enchanted and intrigued visitors for thousands of years.

FIFA deemed this isolated field one of the most remarkable places to play the sport.

This beach runway is off limits during high tide.

The last inhabitants of one of the U.K.'s most remote islands were evacuated in 1930.

First point in the Struve Geodetic Arc, a 19th century undertaking to measure the Earth's size and shape.

This dizzying tower was built to better broadcast the 1980 Moscow Olympics.

Abandoned Soviet base once stocked with short and medium range missiles pointed at western Europe.

Two well-hidden huts let animal lovers spend the night among the bears, wolves, and other predators of the forest.

This soviet pilot's graveyard is filled with headstones made of airplane fins.

Wars fought and wars won are remembered by these abandoned bunker ruins.

Rusted cars, trucks, and buses form a fascinating collection of Soviet-era machinery.