An abandoned set from the 1980 film "Popeye," claimed and repurposed as a theme park by creative locals.

Social outcasts and cannibalism in Stalin's Soviet Union.

World's largest crossword puzzle spans the side of a towerblock, its clues scattered throughout the city.

This architecturally eclectic early-20th century mosque was built as a place of worship for the Islamic followers of a Jewish messiah.

The biggest exposition of dental equipement in Europe. And a Mummy.

The highest peak in Northern Ireland is topped with a stone tower and haunting burial mounds.

A rocky Irish outcropping with a history of wealth, conflict, and ruin.

A curious memento mori hangs in the magnificent Cathedral of Segovia.

Tools, pottery, and mummies showcase the history of La Palma's native people.

The Gaudí-inspired building that was the start of Terrassenc modernism.

A gardener saved a beloved clock face from destruction by building it into a wall outside his house.

A unique journey back in time to an early 20th-century fairground.

This industrial museum is based on one of the oldest standing iron forges in the U.K.

Long before wi-fi, this public seat provided the wonder of being online while outdoors.

This abandoned lock-up was saved because of its connection to a local football team.

An enchanting monastery in the Spanish countryside appears lifted from a fantasy tale.

Barcelona's historic 19th-century sewers, whose foundations were laid in medieval times, are open to the public for exploring.

These secluded and abandoned anti-aircraft defenses have become one the most scenic viewpoints in Barcelona.

A historic Georgian building and warm springs.

At this snack-shack in the bucolic British countryside, you can still get a slice of socialism with your spot of tea.

This police call box harkens back to an era of pre-radio communications, and has a rather unique feature.

Rare and strange weather predictors, from mercury barometers to leech prognosticators.

Cycle the solar system—from the sun to Pluto—right here on earth.

A hidden plaque is the only reminder of the lost palace where two storied English kings were born.