Hidden beneath the famous St. Peter's Basilica is a veritable city of the dead that may hold the remains of St. Peter himself.

A statue representing a lost Roman profession that was vandalized for centuries.

A massive marble foot is tucked away in a small alley near the Pantheon.

Plaques on its facade commemorate the Tiber's most destructive deluges.

A detailed pachyderm supports Rome's smallest Egyptian obelisk.

The spot where the fascist dictator made some of his most famous speeches including declaring war on Britain and France.

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

The best preserved Paleochristian basilica in Rome hides a number of oddities and secrets.

Rome’s legendary peephole vista is also a former Crusader stronghold.

This hydrochronometer was invented by a Dominican monk and is a prime feature in this garden.

The ruins of the largest gladiatorial school in Rome are largely hidden under modern streets.

A Nesting Doll of Churches.

A rather vulgar example of the transition from Latin to the Italian vernacular.

Brass cobblestones mark the places where individual Holocaust victims were taken from their homes.

This is the oldest Roman-made bridge in the city still existing in its original state.

A striking memorial recalls thousands of Bolognese men and women killed fighting fascists in World War II.

Legend has it this fountain built to symbolize the Pope’s power hides a strange secret concerning Neptune's manliness.

Over 100 towers were built in Bologna during the Middle Ages, but only 22 survive.

A small window on Via Piella offers a lovely and rare peek at Bologna's lost canals.

Time has been frozen at this station since the bombing in 1980—or so it was believed.

A slightly creepy gallery of plaster cast models in the same museum as Michelangelo's David.

Canada's largest dinosaur skeleton was hidden away in storage for more than 40 years.

One of the Seven Wonders of the Modern World holds the world's tallest metal staircase.

The proud hometown of an American legend has honored their favorite son with what seems to be a gravestone.