A seaside castle complex that stood through centuries of conquests.

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

After being destroyed by two separate fires, this monastery is now home to a small zoo and relics from dozens of saints.

The heads and relics of 179 monks slaughtered by pirates are on display within this Ceonobic Monastery.

The highway's southernmost spot is a beloved local attraction.

The bronze uniforms commemorate the vital role of women during World War II.

This sixth-century church housed an icon with eyes so beautiful legend has it they inspired the name of a Greek city.

A staircase made of gravestones leads up to this church built into a giant rock.

The Greek War of Independence was declared at this medieval Byzantine sanctuary.

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

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

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

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

Tiny historical streetcars wind through a small scale version of Crescent City in this whimsical train garden.

This fairytale-looking castle is a wonderful example of Greek neo-Gothic architecture

This slumbering beast honors the Bavarian soldiers who died in Greece during a 19th-century typhoid outbreak.

The historic building has preserved human organs, unusual hexagrams, and scars from a political assassination.

Step inside an ancient beehive tomb built for a mysterious cult hero.

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

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

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

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

Stepping away from the glitz of mobsters and casinos to learn about the other history of Vegas.

The blinking light atop the iconic landmark has been sending secret messages for decades.