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

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

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

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.

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

A 2,000-year-old computer demonstrates remarkable engineering and astronomical precision.

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

Climb the dead electric pylons of Messina.

A bookstore dedicated to the intersection of comedy and art.

This generously endowed statue once stood guard outside a Roman home.

On the wall of this medieval walkway, a symbol of the Spanish Inquisition.

Barça football fans might see the insignia hidden in a church window as a divine sign.

This stunning iron gate designed by Modernist architect Antoni Gaudí is filled with mythic symbolism.

A once-secret library of Freemason history in Catalonia.

The iconic boulevard is the perfect place to catch sight of a bicycling skeleton, a levitating Satan, or a chef with his head stuck in a pizza.

A once grand hotel now sits eerily abandoned in the Catalan countryside outside Barcelona.

Possibly the oldest church in Barcelona, this basilica has its pagan and Christian mythologies all mixed up.

A cemetery in Barcelona's Poblenou district is home to this touching funerary statue, which depicts death in the form of a winged skeleton.

This Funeral Hearse Museum represents the finest in cadaver transportation.

One of Europe's largest supercomputers is housed inside of a disused chapel.

Turntable anonymously received orphans, alms, and groceries.

Week-long block party becomes a competition for the best decorated street.

A stately palace has been converted into the world's largest cannabis museum.