How did the right arm of a 13th-century English bishop wind up in a Connecticut church?

One of the most photographed locations in the entire city.

An abandoned Byzantine fortress and notorious prison.

Constructed on the ruins of a convent, this tower saved countless lives.

The mummified relic of St. Antoninus.

This bustling Italian plaza is built on the ruins of an ancient Roman amphitheater.

The naturally mummified body of a peasant girl saint.

Fortified medieval tower house with lovely roof garden.

One of Jeff Koons’s largest sculptures and his first commemorative work.

Former hunting lodge of a duke who was an avid collector of impressionist works.

An immersive projection art installation uses sound, scale, and light to take visitors inside classic works of art.

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

Paris' linguistic guide to the international language of, yes, love.

France's most famous cemetery, with some of its most curious tombs.

This castle has links to Portugal’s founding and struggles for independence.

This little-known national museum houses over 40,000 works of art from across the world.

A restaurant devoted to "trouser grip" wrestling, an ancient form of Viking wrestling that is Iceland's national sport.

Twisted girders are all that remain of an Icelandic bridge that was wiped out by a combination of volcanic heat and glacial floods.

The picturesque birthplace of Icelandic democracy is drenched in the blood of its brutal past.

A giant red chair bolted to a rock on a remote mossy hillside in Iceland.

If a glacial river suddenly diving into a sheer chasm via a dramatic, multi-stage waterfall isn't peak Iceland, it's certainly close.

This valley of hot springs and boiling mud pots is home to the record-holding "Geysir," which originated the English word.

The most powerful waterfall in all of Europe.

Strange rock formations tower above the river that snakes through this enchanting Icelandic canyon.