Ancient Greek oracle of the dead.

Replicas of Apollo's leonine stone guard cats still line a sacred row in Greece.

A makeshift shrine to the late rock star is still kept up on the nondescript façade outside 1 Logan Place.

Franciscan monks created a facsimile of the Holy Land for North Americans who couldn’t afford the trip overseas.

Hidden within a Netherlands crater is a stone bed that lets those who lie in it see the sky as a curved surface.

A Portuguese Jewish cemetery filled with stunning grave monuments that date back to 1614.

A wunderkammer of curious objects and intriguing art nestled within a hub of ancient Roman sites.

Inside this medieval defense tower stands a modern residential building.

The chimney of a shuttered power station in the Po Delta is the second-tallest structure in Italy.

In a tower at this centuries-old castle, members of a noble family were imprisoned and left to starve.

Inside the small garden of two mid-century apartment buildings stands a centuries-old bell tower, separated from its original church and hidden from view.

The largest Canadian war cemetery in Italy commemorates those who died in one of the bloodiest battles of the Italian campaign during World War II.

One of the few places of its kind, this space research center sits deep in the countryside of Matera.

This former papal residence was the site of an infamous incident known as the “slap of Anagni.”

This war memorial holds the remains of around 20,000 World War I soldiers from both sides of the conflict.

In Majella National Park, these stone dwellings harken back to the region's pastoral history.

A plaque honoring a Hungarian hero of Italy is hidden in plain sight in Palermo.

An abandoned piece of phallic art repurposed by locals into a makeshift fertility shrine.

An unusual sculpture with a meaning shrouded in mystery.

A collection of wonderfully preserved 19th-century creatures, as well as hunting trophies seized during a police raid.

This massive rock balanced for thousands of years being tossed here during a volcanic eruption.

A Roman calendar dating to the first century is tucked away in a small town alley.

Inside features a display of how artistic crucifixes transformed throughout the centuries.

This incredible second-century sculpture depicts a trio of gods worshipped by the ancient Romans.