This medieval city gate is now a blend of the past and the modern world.

Italian cave with exceptional acoustics and an unsavory history.

The world's most active stratovolcano is almost always erupting.

This triumphal 16th-century arched gateway leads to the oldest street in Palermo.

150 or so scrounged-up lamps, chandeliers, and lanterns light up this alley in central Athens.

This church is dedicated to the patron saint of seafarers.

This 18th-century former mosque held the first Hellenic Parliament.

Public water fountains built during the Ottoman Era still stand throughout this seaside town.

A staircase made of gravestones leads up to this church built into a giant rock.

Legend says it was constructed with the destroyed pillar of an ancient Greek Temple.

One of the best-preserved medieval streets in Europe.

This slumbering beast honors the Bavarian soldiers who died in Greece during a 19th-century typhoid outbreak.

Step inside an ancient beehive tomb built for a mysterious cult hero.

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

Giant marble phalluses on the sacred island of antiquity.

Heralded as the world's first theater, these ruins are often overlooked as they reside in the shadows of the Acropolis.

The oldest cemetery of modern-day Athens blends the modern and ancient worlds.

An ancient octagonal weather station named for the eight Greek gods of wind.

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

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

The hallucinogenic center of the ancient world.

The ruins of an 800-year-old monastery boasts the tallest round tower in Ireland.

A hugely vast Irish landscape of barren rock that stretches for miles.

Whether they are bulls or pigs, these ancient animal sculptures are fascinating relics.