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.

2300-year-old Roman road connecting the empire.

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

Legend says this sacred tree was a gift from goddess Athena.

This famous archeological mystery may be an ancient example of movable type.

This secret coastal village is studded with pastel-colored houses all piled on top of one another.

Swarms of dainty flying insects swarm into the Petaloudes Valley to get busy.

A quirky bookstore hidden beneath a sea of whitewashed Greek villas.

A Bronze age settlement on the Greek island of Santorini might have been the inspiration for Plato's Atlantis.

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

A minotaur, a labyrinth, and a dubious restoration pull in visitors from around the world.

Nordic giants resurrected from the sea and restored to their former greatness.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

Copenhagen's celebrated theme park and gardens.

Small Easter eggs are hidden in the ventilation holes of the city's newest trains.

This small museum nestled inside a souvenir shop is dedicated to Sweden's most well-known toy.

An 11th-century runestone decorates the halls of Terminal 2 of this Scandinavian travel hub.

It is said that each of the white stones in the red facade of this medieval house represents the head of a murdered Swedish noble.

Stockholm's deepest subway station is also a stunning ecological wonder.

Sweden's "good old days" painstakingly re-created in a model village.

It houses the remains of a 17th-century version of the Titanic.

Stockholm's decidedly unique public transit system has doubled as the world's longest art gallery for decades.