The largest and best preserved necropolis in the Western Mediterranean.

A socialist building dedicated to teachers showcases one of the largest Soviet mosaics in the world.

Check the time in 145 countries at once with this East German relic.

A prime example of socialist modernist architecture, wrapped in a enormous fresco about the media.

One of the most well-preserved castles in Italy also contains a rare medieval example of a port fortification.

On the shores of Lake Garda, the ruins of a Roman villa that allegedly belonged to the poet Catullus.

This winding road through an Italian canyon may be the most scenic drive in the world.

A military museum, art park, mausoleum, and architectural oddity all on one fascist's estate.

Right beyond the Uzbekistan-Tajikistan border lies the oldest human settlement in Central Asia.

The remains of an ancient city-state along the Silk Road.

Home to what was once considered the largest gate in central Asia.

Controversially restored in the 1970s, this giant 15th-century mosque is shrouded in legend.

Light still pours into the ruins of this ancient Islamic observatory.

The Avenue of Mausolea is a series of grand palatial tombs.

Ancient barriers wrap around what was once an important stop along the Silk Road.

These "50 Fortresses" have been unearthed in the ancient oasis of Khwarezm.

Once a bustling fishing port, this semi-ghost town is now more than 90 miles away from the shore.

On La Gomera, "Silbadors" communicate in a 4,000-word language of whistles.

An old department store turned Nazi prison turned artist commune.

In the summer of 1957, a massive architectural exhibition showed off the future of urban living in this German neighborhood.

Where once there was a train station bathroom, there is now this German burger joint.

Beneath the impressive baroque cathedral that rises from the center of Berlin lies the largest collection of Prussian royals in the world.

The last remnants of a massive medieval wall that once encompassed the city of Berlin.

Berlin's old airport.