Ottoman-era houses lovingly preserved.

This remarkably well-preserved Egyptian plinth is pretty well traveled for a giant piece of stone.

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

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

Step back in time and witness the fall of Constantinople.

A charming beach town in Turkey captures all the colors of the rainbow.

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.

Seven early Christians were sealed into a cave where legend has it they slept unharmed for centuries.

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.

Cave on extinct volcano, once home to famous mathematician Pythagoras.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

This gorgeous reading room houses the oldest and largest art history library in the Netherlands.

This cheese shop also houses a museum devoted to Dutch dairy.

A unique work of automotive art calls this shopping center home.

An ancient passage filled with stalls selling used books, once frequented by Vincent Van Gogh.

Amsterdam's former hotspot for public executions and dissections.

This unusual elevator doesn’t stop or slow down.

Established in 1638 to battle the Black Death, this botanical garden is a treasure trove of rare flora.

The world's first zoo for microbes collecting the horrible and wonderful things living on and around us.

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

The most metal church of all time was built in record time because of an international, pious pissing contest.

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

A gorgeous, Gaudí-esque stairway constructed in the city of Istanbul by a prominent Jewish family.