This bridge later moonlighted as a local jail.

The largest stone circle in the world has ended up bringing up more questions than it has answered.

An Iron Age fort on the edge of a seaside cliff offers a glimpse into an ancient, mystical world.

These moss-covered medieval ruins tower atop the smallest of Ireland's Aran Islands.

This controversial Irish show cave is home to a massive formation known as the Great Stalactite.

A sacred well steeped in Pagan roots on the West Coast of Ireland.

Bizarre living fossil only grows in a small chunk of the Namib Desert.

Tracks of ceratosaurus and Coelophysis rhodesiensis tracks can be found fossilized in the sandstone near Mt. Etjo.

Ancient artists in the middle of nowhere.

Hitch a boat ride to dine on stilts while watching wildlife.

A memorial to 350 people burned at the stake for witchcraft.

In a city of wooden houses, this watchtower was vital for early fire detection.

A little-known cafe in an old copper bridge tower with 360-degree views of the harbor.

A collection of noses tucked inside an art museum reveals how times have changed.

Bored potato-guarding Nazis etched their thoughts onto a brick storage building in Copenhagen's Meatpacking District.

At first glance, this area seems like just another city park, but the lush landscape hides a dark past.

The unsettling remnants of a torn down movie set lies nearby the ruined location of the actual Płaszów Labor Camp.

This Polish cave has housed a dragon, a brothel, and an enduring legend.

Two gravestones clasp hands over the religious divide.

Preserving the research tools, unexpected inventions, and odd collections of generations of college professors.

Rich with fauna and flora, nature-lovers can walk across the sea at this UNESCO World Heritage spot.

A condensed piece of China floating in a Dutch harbor.

These crumbling Nazi artillery bunkers are now fair game for massive graffiti projects.

Hear the quietest sound from across the dome.