A museum dedicated to the mysterious cryptid.

An Industrial Revolution-era public work that purified water using nothing but sand.

A memorial for public executions that dates back to the 14th century.

The original stone marking the interwar border between Germany and Poland sits in this unassuming village park.

This former Cyprus flight hub is now a crumbling, abandoned ghost complex.

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

View the ancient remains of buildings and the ancient "River of Hades" before hopping on a train.

One of the best-preserved ghost towns in Arizona speaks to the difficulties of establishing mining towns in the 19th century American West.

Between 1930 and 1946, a tobacco farmer laid his beloved horses and mules to rest in this small patch of pine forest.

One of the best-preserved examples of an old town lock-up in the country.

This supermarket offers shoppers a window into the past alongside their groceries.

A replica viking ship from the Chicago World's Fair is still in dry dock in an Illinois park.

An antiquated German apothecary on Chicago's North Side.

The hallucinogenic center of the ancient world.

In the middle of a Vienna square, Roman ruins dating back some 2,000 years are on display.

This ancient fort has been a great insight into the Roman presence in the region.

The ruins of an ancient stadium that hosted gripping chariot and horse races.

Long tunnels run under the ancient chariot racing circuit to the tower.

Stunning Roman aqueduct used for 1900 years and still standing.

Centuries later, the victims of Great Britain's greatest hysteria are finally being remembered.

It's believed emperor Hadrian himself funded this once architectural wonder.

Once home to more than 50 displays of freshwater fish.

Touching mementoes from those who didn't make it back from World War I still hang in one of New York's oldest bars.

Was the ravaging reptilian that terrorized this village a dragon, or an escapee from a London menagerie?