A Byzantine church containing the holy remnants of three saints sits atop the site of an ancient temple.

The ruined doorway is a portal to the building's turbulent and torturous past.

What once sat in the world’s spotlight is today a largely disused ghost complex.

This small 16th-century church in Athens is almost entirely surrounded by a modern building.

The ruins of an ancient Roman tomb hidden in the basement of a trendy clothing store.

The rocky remains of an ancient Greek forest.

A sharp sculpture made of thousands of pieces of jagged glass.

Where commuters walk through remnants of an ancient Greek necropolis.

The railway carts travelers to central Athens's highest peak, which offers stunning vistas of the city.

Large collection from the 3rd millennium BCE.

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

This 15th-century island fortress later served as home to the executioners no one wanted to live near.

Cave on extinct volcano, once home to famous mathematician Pythagoras.

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.

This legendary city has been a tourist attraction for centuries.

Hidden in a secluded Greek cove is a pristine beach marred only by the rusting smuggler's hulk stranded on its shores.

The hallucinogenic center of the ancient world.

Monasteries on rock pillars, once accessible only by frayed ropes.

This lake in northwest Iran has started turning from green to red more frequently than scientists are comfortable with.

A historic trade hub teeming with gorgeous architecture, colorful goods, and vibrant designs.

This 12,000 year old Iranian cave village has been continuously inhabited for over 3,000 years.

The hottest, driest, and most scenic desert on Earth.

In this tiny Iranian town playing on the roof isn't just encouraged, it's the only place to go.