A steel paper plane is all that remains of a crashed aircraft that caused an amazingly small amount of damage.

A 12th-century church with a medieval fresco and an intriguing “Greek runestone.”

This gem from the industrial age helps visitors and residents alike traverse hilly Stockholm.

A plaque marks the house in Stockholm where the French philosopher René Descartes lived up until his death.

The suspected burial mound of legendary Viking Björn Ironside.

Located in an old church, this brewery produces a different kind of holy water.

A Japanese video game arcade hides in the back of a Swedish pool hall.

The discovery of an old wall led to the creation of this fascinating museum about the city in the Middle Ages.

The world's largest model of our planetary system.

From Iggy Pop to David Bowie to Nick Cave, this regal music studio has served some of the all time greats.

Harlequin costumes, signed scripts, and armor-wearing puppets.

A forgotten "city of water" underneath the famous Trevi district.

This ancient trail climbs the mountain where a Latin League cult worshipped Jupiter, its main deity.

Charles Dickens was not a fan of the ghastly wall dressings in this 6th century church.

The studio built by fascists in the hopes of "reviving the film industry" with the occasional propaganda film opportunity thrown in.

Museum dedicated to literary greats of the Romantic Period is also the home in which Keats met his untimely end.

One of several skulls claiming to belong to the beheaded St. John the Baptist is on display at this Roman church.

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

This ritzy Italian market is built around a statue of an unforgiven heretic who was burned for his belief in an endless universe.

Jesus' footprints and the first catacombs in the world.

Architectural monsters are devouring this palace's every door and window.

The final resting place of the poets Shelley and Keats.

The skull of the patron saint of lovers lies in the Basilica di Santa Maria in Cosmedin—maybe.

The only "Egyptian" pyramid in Europe and the legendary tomb of Remus.