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

This mystical orb covered in strange symbols is thought to have been used in ancient Greek magical rituals.

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

Where commuters walk through remnants of an ancient Greek necropolis.

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

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

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

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

This remarkable cave was discovered after a shepherd watched bees enter and exit through a small fissure.

This legendary city has been a tourist attraction for centuries.

The hallucinogenic center of the ancient world.

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

This church is dedicated to the patron saint of seafarers.

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

An allegorical statue of a giant pregnant woman representing justice and truth.

Geothermal waterfalls in Tuscany.

Nestled in the hills of Tuscany are gorgeous, multicolored hot springs.

An ancient Roman theatre restored to its former glory in the Spanish city of Cartegena.

Once the grandest synagogue in medieval Spain, it now stands as a memorial of the 15th-century Jewish exile.

The current seat of the Parliament of Andalusia was once the epicenter of the Great Plague of Seville.

This abandoned viewing platform has become a monument to unnecessary government spending.

Replica of Seville, Spains famous Giralda, a former minaret converted into a bell tower.

The fragmented remains of a massive public bath connected to the city's water supply.

Originally used to sell brandy, the bull-shaped billboard became an iconic symbol of Spain.