One of the most extreme deserts in the world, these snow-free valleys harbor life, despite the hostile environment.

A collection of art from Bulgaria's time as a communist state.

This 3,800-year-old site contains markers used to study the movement of the sun and moon and create a lunar calendar.

Giant marble phalluses on the sacred island of antiquity.

Replicas of Apollo's leonine stone guard cats still line a sacred row in Greece.

The ruins of an abandoned medieval city where the last Byzantine emperor was crowned.

The ruins of this monumental city founded by the first Roman Emperor are strangely overlooked by most travelers.

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

A solar-powered primary school inspires hope and experimentation in a country ripe for energy innovation.