According to tradition this is the oldest church in Venice, but its actual age is a mystery.

Two stone columns flank the grand Venice square, but there were supposed to be three.

This Roman statue is missing a limb from when the Venetians stole it from Constantinople during the Crusades.

Go inside to really appreciate this 500-year-old technological masterpiece.

This amazing medieval fortress stands atop a promontory along the famous Cinque Terre.

This cathedral hides a sculpted dog that determines your fate and an unexploded shell from World War II.

A copy of the famous statue can be found in this Florence piazza, along with one of the most breathtaking views of the city below.

The middle finger of modernity.

A medieval weapon rumored to have been used by the brilliant poet himself.

The famous sculptor left his mark on this Italian wall in an internationally protected example of street art.

Renaissance hospital featuring a rotating door into which unwanted babies were dropped.

This bronze boar's snout has been rubbed to a golden sheen by visitors seeking good fortune.

For centuries, this large Roman villa remained hidden thanks to the eruption that buried nearby Pompeii and Herculaneum.

This tiny islet has somehow housed an ancient temple, two monasteries, a church, a fortress, and a restaurant.

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

A narrow opening between the mountains of the Amalfi Coast creates a scenic hidden beach.

More sculpture than building, this architecturally significant temple was built on the spot of Saint Peter's crucifixion.

One of Catholicism's four major basilicas has a series of papal portraits that are said to predict the end of the world.

Gods clash with machines in a power plant regenerated as a museum.

The former Nazi Germany concentration camp stands as a museum to remember this dark chapter in European history.

These plaques found across Warsaw commemorate the sites where executions or battles took place during the German occupation.

At first glance, this area seems like just another city park, but the lush landscape hides a dark past.

An artificial hill and apparent calendric structure built in the Early Middle Ages immortalizes a legendary Polish princess.

An underground city of salt.