Five sultans and their families rest in eternal splendor, teeming with overlooked beauty and drama.

A marvel of Byzantine engineering under the streets of Istanbul.

The ruins of a medieval seminary some say is the oldest university site in Scotland.

This long-hidden space above Westminster Abbey now displays the battle gear of the legendary King Henry V.

This large, circular tomb is the final resting place of the first emperor of Rome.

A magnificent waterfall is also home to the remains of a Roman hydraulic engineering system.

Inside this McDonald's you can dine on your Big Mac and fries next to a 2,500-year-old Roman wall.

The spot where the fascist dictator made some of his most famous speeches including declaring war on Britain and France.

This hill made entirely of ancient Roman jars was simply a garbage dump to the people of the time.

An abandoned Roman salami factory has found new life as an art space home to 200 squatters.

This beautiful park on the outskirts of Rome protects the ruins of two colossal ancient aqueducts.

In the early Roman Empire, people deemed traitors and criminals were tossed to their deaths from this rock.

An abandoned cemetery lies in ruins as the surrounding forest swallows it whole.

A two-way chairlift system between Zugliget and the highest point in the city.

A Hungarian optometrist's charming collection of Asian art and curiosities.

Once the home of a hermetic monk, this cave now houses a small church.

A European-style bath house in Chicago.

A sacred Ojibwe site covered in pictographs next to Lake Superior.

A long-abandoned provincial prison left to crumble in the frigid air of Ontario.

A neutrino detector built into the largest man-made underground cavity in the world.

A rescue facility that caters specifically to wolf-dog hybrids, and educates about these unique animals.

Roadside tribute to a staple of eastern European cuisine.

Blackfoot petroglyphs of southern Alberta which date back as far as 7000 B.C.

Hoodoos, naturally eroded land formations, stand 20 feet tall in the Canadian badlands.