This graffitied 19th-century building was a prototype of European industrial architecture.

The ruins of this ancient fortification wall sit in the middle of a quiet, residential intersection.

There are many Byzantine-era churches still standing in Athens, but this is the only one with a 2,500-year-old column rising through its roof.

The burial place of one the greatest Arthurian authors, with the sword in the (grave)stone.

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

The only ancient site that remains on the south bank of the sacred Ilissos river.

An often overlooked ancient site in downtown Athens with substantial history (and nature).

The ruins of an ancient fortification wall sit in front of and underneath this boutique hotel.

The ruins of an ancient mansion sits in front of and underneath a contemporary art gallery.

A former military hospital is now used to study and preserve artifacts of the Acropolis.

A preserved portion of an ancient Athens barrier is displayed in a hotel basement.

According to legend, this ancient column contains healing properties.

Underneath one of the region's most historic roads lies the home of Plato's successor.

This church was constructed on the site where St. Philip the Apostle preached to the ancient Athenians.

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

Catch raucous live performances of traditional tunes at this old-school taverna.

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

This historic structure has been used as a mosque, a barracks, a prison, a school, and a bakery.

An ancient Greek monument and a Byzantine church coexist inside this cave.

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

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

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

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

Luminaries of all stripes have sipped strong Greek coffee at this cafe since 1839.