Macabre astrological automaton clock dating to the late 1400s.

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

This oceanside Reykjavik spot is speckled with recycled sculptures and large stones.

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

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

Iceland's "Smoky Valley" is a beautiful river that is shrouded in a constant cover of steam clouds.

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

This eye-popping Icelandic crater lake is surrounded by red volcanic rock.

Indents in the pavement are all that remain from a grisly death machine in Paris.

The celebrated eyesore created by starry-eyed sweethearts.

During the summer months, giant teddy bears take over Paris near Les Gobelins metro station.

Admire endangered plants in a verdant garden that looks straight out of a Monet painting.

The tradition of open-air secondhand and antiquarian bookselling in Paris dates back to the Renaissance.

The video game-themed street art first popped up in the French city.

This Bordeaux parking garage has 712 indoor spaces, and one outdoor.

Home to the "Rat King" of Nantes and other wonders of the natural world.

This French "sea of rocks" is packed with stunning rock formations and its own medieval castle.

This recessed garden protects thousands of mountain plants by creating its own microclimates.

This Parisian gem is one of the most incredible ethnographic museums in the world.

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

This structure atop a craggy cliff in one of the most beautiful parks in Paris boasts an unbeatable view.

This bridge was constructed from the rubble of the infamous Bastille.

A medieval church with largest and oldest collection of Renaissance frescoes in France.

The world's tallest bridge is also possibly the most elegant.