The 16th-century church has the only stained glass windows that survived the Scottish Reformation intact.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

This giant middle finger statue sends an unambiguous message to Italy's bankers.

This crumbling medieval basilica once attracted pilgrims by the thousands to collect a miraculous dust that formed above the saint's tomb.

This historic hotel preserves many treasures from its heyday hosting passengers on the Orient Express.

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

Climb a steep hill in 90 seconds on the second-oldest urban subway in the world.

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

No one is sure if the world's fourth-largest diamond had been found in a rubbish heap or was pawned by Napoleon's mom.

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.

Inside a former cabaret, seven floors of erotic art.

France's most famous cemetery, with some of its most curious tombs.

Standing atop 2nd-century Roman ruins, this church is one of the oldest and most iconic in Old Cairo.

An endless sea of white conical domes.

The highest peak in the United Kingdom has a history of physics, specters, and a pilgrimage of strange objects.

Ruined 11th century abbey built by King David I in Edinburgh, Scotland.

A church that bred legends, and served as an inspiration for the Da Vinci Code.

The heart of a Scottish legend had a centuries-long journey before reaching its final resting place.

Legend says if you stick your thumb in the hole and it gets wet your wish will be granted.

Carvings in Turkey's Marble Road may have directed ancient Romans to a hidden brothel.

This former Imperial summer home was the venue for a royal slap that once echoed 'round the world.

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

A fountain standing as a testament to a doomed alliance.

Ancient serpentine sacrifice holder that has stood the test of time.