A serpentine highway twists and turns over the treacherous Norwegian Sea.

A little sculpture with a large wardrobe.

Twelve grave-faced marble angels guard the emperor's tomb at Les Invalides.

This charming cobbled backstreet is the most Instagramable street in Paris, much to the residents' annoyance.

High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.

This historic covered bridge contains a series of macabre paintings that communicate one thing: everyone dies.

The alpine falls where Sherlock Holmes apparently met his demise can actually be visited.

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

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

The ancient latrines of the Greeks, in all their public glory.

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.

Turkish adventurer antiques in the heart of the Grand Bazaar.

Roman ruins, natural methane fires and a lovely beach.

The deepest underground city in Turkey was designed to protect 20,000 people behind massive stone doors.

A marvel of Byzantine engineering under the streets of Istanbul.

A Lycian city of the dead carved into the hillside of Southern Turkey, complete with startlingly human touches.

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

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.

The sweet story of how American cargo planes became known as "Candy Bombers" during the Berlin Blockade.

Legendary site where an evil bishop was devoured by rodents.

Tiny castle in the middle of the Rhine made you pay to pass.

Every hour the doors open to reenact the legend of the heroic mayor who saved his town by drinking a gallon of wine.

The last bastion of Roman presence north of the Alps looms over a German town.