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

One of the greatest collections of coins in the world is housed in the former mansion of an archeological pioneer.

A sprawling collection of books and manuscripts about ancient Greece that would have put their famed libraries to shame.

Where commuters walk through remnants of an ancient Greek necropolis.

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

The ruins of an ancient Roman tomb hidden in the basement of a trendy clothing store.

This mystical orb covered in strange symbols is thought to have been used in ancient Greek magical rituals.

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

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

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

A sixth-century Byzantine cistern hidden below a modern carpet store.

This eatery re-creates dishes from the Ottoman Empire so you can dine like a sultan.

1513 Turkish world map, full of European state secrets and snarky commentary.

A small etching on the white marble parapet was written in runic script by a Viking mercenary.

A marvel of Byzantine engineering under the streets of Istanbul.

A museum dedicated to traditional Armenian clothing and their designer.

This medieval manuscript collection has some of the most obscure and ancient texts in the world.

She asked for a potato cellar and over the next 23 years he gave her a network of holy caves.

An extraordinary house museum and cabinet of curiosities in the heart of Florence.

The graveyard is filled with beautiful funerary art and boasts breathtaking views of Florence.

Drink wine handed out through a window as part of an age-old tradition.

Over 50 exquisite hand-painted Renaissance maps decorate a Medici storage room.

A large grotto built in the 16th century amidst Florence's famous Boboli gardens.

The doodles of a genius line the walls of a secret room under the Medici Chapel, where they were hidden for nearly 500 years.