The martyr's wax-enhanced skeletal remains lie preserved in a glass case in the Santa Maria della Vittoria in Rome.

This ritzy Italian market is built around a statue of an unforgiven heretic who was burned for his belief in an endless universe.

Jesus' footprints and the first catacombs in the world.

The engineering wonder and pleasure dome of a much-maligned emperor still holds undiscovered secrets.

The final resting place of the poets Shelley and Keats.

The underground sanctuary of a mysterious ancient cult.

At the crypt of St. Mary of Eulogies and the Dead you are left alone to ponder mortality among piles of skulls.

The skull of the patron saint of lovers lies in the Basilica di Santa Maria in Cosmedin—maybe.

The yawning maw of this pagan visage is said to bite off the hands of liars.

An alchemist's "magic door" stands in the middle of a Roman park.

Rome's semi-secret peephole vista is also a former Crusader stronghold.

Architectureal fantasy quarter of Rome.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

Founded in 1788, this Rhode Island institution is the oldest operating general store in America.

This enormous photomural pays homage to Vancouver's infamous history of public activism.

Vancouver's only resting place for the city's deceased.

This quirky piece of naval artillery has been deafening Canadians for over a century.

This rare example of Vancouver's Victorian past was the home of one of the city's first bookbinders.

This three-chambered cave is the only protected natural bat hibernaculum in Quebec.

It took over 100 years to decode this enigmatic epitaph for two buried brides.

Abandoned for over a century, this chilling train tunnel is now a destination for ghost hunters.

What happens when a sculptor has to find a way around a 100-year-old copyright.

The wreckage still sits at the exact spot the plane crash-landed in 1945, carrying 1,000 pounds of explosives.