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

The only surviving choragic monument is a trophy awarded in 334 BC for the winning dramatic chorus.

A Byzantine church containing the holy remnants of three saints sits atop the site of an ancient temple.

A crushed gate and giant bronze head serve as a reminder of Greece's fight for freedom.

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

View the ancient remains of buildings and the ancient "River of Hades" before hopping on a train.

This century-old, family-run bakery specializes in loukoumades, a Greek doughnut once served to ancient Olympians.

Savor sheep milk yogurt at the last of Athens' dairy bars.

This gem is often wrongly overshadowed by the larger, newer Metropolis church in Athens.

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

Where commuters walk through remnants of an ancient Greek necropolis.

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

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

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

The Cycladic architecture makes this Athens neighborhood feel like an island paradise hidden in the shadow of the Acropolis.

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

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

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

This wooden mosque is one of the few remnants of medieval Poland's Muslim Tatar community in this deeply Catholic country.

A marker honors the brief peace found by a tormented artist in the fictional land of Kcymaerxthaere.

Old cabin-like homes in a rural community untouched by time are known for their vibrant and colorful window shutters.

Crosses of all shapes, sizes and colors litter the mountain, the site of a huge yearly Orthodox pilgrimage.

The possible imprisonment of Vlad the Impaler here earned the medieval castle its nickname, "Dracula's Castle."

The European towns of Brașov and Râșnov each have proud signs reminiscent of the Hollywood sign.