This post-Ottoman era church in Athens was built by locals to serve the residents of Anafiotica

A martyred saint built a nunnery and school for girls here known as the "Parthenon."

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

An ancient site that has revealed incredible artifacts including portions of the Themistoclean Wall.

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

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

This Ottoman-era Greek Orthodox Church was built to honor Agia Pareskevi, a Christian saint.

The home of Greece’s national poet sits crumbling in the middle of a popular tourist district.

This Ottoman-era church is hidden amid a busy tourist area.

An important example of architectural history slowly decays in the city center.

This building displays the scars of the “Dekemvriana,” a dark time in modern Greek history.

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

These ancient ruins hide in plain sight next to a dessert shop.

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

When construction began on this hotel, developers were surprised to find the ruins of an ancient civilization.

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

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

This once architecturally advanced housing complex is now a haven for squatters that still bears the scars of war.

This abandoned shopping arcade has new life as an art installation.

150 or so scrounged-up lamps, chandeliers, and lanterns light up this alley in central Athens.

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

A Byzantine-era church hidden in a wooded area below the Acropolis.

A historic building houses one of the most important archaeological institutes in Europe.

Preserved portions of Athens's ancient defenses are on display in a subterranean parking garage.