This building features dozens of faces along its facade, although one is a bit chilling.

In the world's oldest university is a stunning 17th century anatomical theater carved from spruce.

A diverse collection of wax, bone, papier-maché and mummified relics.

Legend has it this fountain built to symbolize the Pope’s power hides a strange secret concerning Neptune's manliness.

An extraordinary collection of 18th century anatomical waxworks.

This famous city eluded concrete detection until the early 2000's.

Taking the subway here means doing so over a bridge located in the middle of an estuary.

This half-forgotten fortress was constructed by the Ottoman conqueror of Constantinople.

The alleged house of the Virgin Mary is tucked away in a park and nature preserve on Mt. Koressos in Turkey and is holy to both Catholics and Muslims alike.

A deadly ancient portal to the underworld.

In this historic region, homes and churches are carved into ancient volcanic rock formations.

This beautiful train graveyard is one of the largest collections of steam locomotives in the Mediterranean and Europe.

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

A marvel of Byzantine engineering under the streets of Istanbul.

An amazing collection of wax anatomical models and terratological models.

Legend has it that this bronze orb, which sat atop an ancient Egyptian obelisk, once held the ashes of Julius Caesar.

2300-year-old Roman road connecting the empire.

One of the most important yet well-hidden museums dedicated to the history of medicine.

The martyr's wax-enhanced skeletal remains lie preserved in a glass case in the Santa Maria della Vittoria in Rome.

The studio built by fascists in the hopes of "reviving the film industry" with the occasional propaganda film opportunity thrown in.

A monumental fountain in Rome features a large statue of Moses that has been criticized for centuries.

A Turkish ghost town abandoned in a population exchange with Greece.

These tombs were built into the side of a mountain so that ancient angels could reach the dead.

Roman ruins top white travertine terraces formed by ancient hot springs.