Hidden beneath the famous St. Peter's Basilica is a veritable city of the dead that may hold the remains of St. Peter himself.

A 16th-century horror show built in a lovely Italian garden.

Europe’s oldest natural human mummy.

A giant portrait of an ancient king looms over the river.

This 14th century castle withstood years of battle but is now sliding off the hills into the Danube.

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

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

Medicinal spa created from the mineral-rich runoff of a geothermal power plant

Three columns of volcanic rock shoot out of the ocean.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

Mass Grave of 48 colonists killed in a raid by Native Americans and the French in 1704.

This tall Massachusetts folly got its name thanks to all of the purple prose its vistas inspired.

Books you don’t need in a place you can’t find.

This rare symbol of Eastern philosophy in the West has been created over years of painstaking construction by the local community.

A late sculptor's last project was to turn this abandoned cement factory into a castle-themed amusement park.

Burial site more than 300 years old.

A maritime museum holding the remains of Blackbeard's pirate ship.

Hell on Earth is actually a small town in Michigan where anyone can be mayor for a day.

The city is full of whimsical portals to another world.

Alleyway plaque commemorating the death of a fictional character in The Maltese Falcon, not far from the author's home.

Live long and prosper in Tennessee.

The Battle of Atlanta in 360 degrees, featuring a corpse that bears a striking resemblance to Clark Gable.

This abstract roadside poultry was saved from demolition by outraged drivers and pilots.

This massive store is home to an eccentric collection of vintage, retro, and peculiar goods.