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

Rebuilt remains of a temple to Roman god Mithras.

The underground sanctuary of a mysterious ancient cult.

Once the largest rope factory in Greece, this abandoned plant now stands like a ghost of industry past.

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

An intricate network of underground tombs carved into volcanic rock.

A series of waterfalls create the illusion of perpetual rainfall in this hidden gorge.

Scores of wax baby figurines add an unusual mood to this beautiful church on the Greek coast.

This small chapel holds the mummified heart of one of the heroes of the Greek Revolution.

The secular incarnation of a religious meditation.

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

Overlooking the harbor is a beautiful neglected mansion guarded by two Egyptian sphinxes.

According to legend, this cavern holds the passage that Persephone used to travel to and from the underworld.

This 13th-century monastery chiseled into the side of a mountain is equipped with a bridge that can be lifted to protect against raids.

This field of half-buried stone crosses was the burial place of a sect of heretical gnostics.

A little-known park with unusual, half-ruined structures and a mystical energy.

A two thousand year old brothel uncovered in Northern Greece.

Poseidon? No one seems to know.

This medieval "painted village" is famous for its geometric facades.

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

These ruins in Volvi were once at the intersection of the Eastern and Western Worlds.

Large collection from the 3rd millennium BCE.

This small 16th-century church in Athens is almost entirely surrounded by a modern building.

Cave on extinct volcano, once home to famous mathematician Pythagoras.