An Italian hillside ghost town.

This quaint Italian town keeps losing ground as the sides of its plateau slowly erode.

The underground sanctuary of a mysterious ancient cult.

The only "Egyptian" pyramid in Europe and the legendary tomb of Remus.

A submerged archeological park still holds the wonders of a Roman Sodom.

An Italian crevasse filled with abandoned buildings gives visitors a look at the world without humans.

This museum housed in a former brothel explores the past and present of sex work in Amsterdam.

The history and future of cannabis.

Museum preserving torture methods from the past.

What was once the largest mine in North America has left behind a hollow hill filled with bright blue waters.

When World War II came to Canada, Fort Péninsule was part of the first line of defense for Allied shipping convoys.

A former electric substation that was converted into a magnificent mansion.

This memorial to a horrific ship collision sits over a mass grave holding dozens of the victims.

The world’s oldest baseball field had to fight to earn its record.

This scenic waterfront swimming pool is the longest salt water pool in North America.

Reputedly the smallest jail in North America.

This castle was once considered as an option for the Royal Family's alternate residence, but you may know it better from the 'X-Men' movie.

This small Newfoundland town has declared itself the “Root Cellar Capital of the World.”

Among the cliffs of the Elora Gorge is an oft-overlooked piece of celebratory graffiti.

A seven-story wooden coal tipple stands this former mine, the last of many that once covered this area.

The picturesque remains of an abandoned silver mine slope down to Tagish Lake in the Yukon.

The 32nd president's sprawling cottage sits on an island enclave jointly managed by the U.S. and Canada.

A massive, fading granite poem is all that remains of one Whitman superfan's tribute to the famous writer.

A mad mystery man who led Canadian mounties on a 150-mile wilderness chase is still buried with his secrets intact.