A magical, if a bit tacky, 1960s castle conjures up medieval fairytales and Greek mythology.

The oldest standing Byzantine church in Athens is tucked within a monastery in the middle of an upscale shopping district.

The rocky remains of an ancient Greek forest.

An ambiguous ambience emanates from this centuries old leprosy quarantine.

Temple complex that once housed the famous statue of Nike.

Where commuters walk through remnants of an ancient Greek necropolis.

The ruins of this monumental city founded by the first Roman Emperor are strangely overlooked by most travelers.

Large collection from the 3rd millennium BCE.

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

Two churches shoot bottle rockets at each others' bell towers in an unusual Easter celebration.

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

This legendary city has been a tourist attraction for centuries.

A spectacular cave and a beguiling lake.

The hallucinogenic center of the ancient world.

Monasteries on rock pillars, once accessible only by frayed ropes.

The elliptical citadel resisted the advance of the mighty Ottomans several times, thanks to the military prowess of the "Dragon of Albania."

A medieval bridge stretches over a sulfur-rich river that leads to year-round natural hot springs.

In the hometown of the Catholic saint and Nobel Peace Prize winner, a memorial dedicated to her legacy.

Housed in an old church, this hunting museum holds a collection of mythical bird-rabbit creatures.

Built to give thanks for the passing of a plague epidemic, this cathedral is a one-of-a-kind architectural hybrid.

The beautiful baroque library of the Hapsburg empire.

This former insane asylum now holds a pathological anatomy museum.

A small museum filled with over 1,000 clocks, and one particular clock calibrated to run until the year 9999.

While this monument tile is shrouded in mystery it also marks the end of the longest ever human chain.