The longest trolleybus route in the world, from Simferopol and Yalta.

The history of Tel Aviv told through a work of art.

A plain wooden seat that once belonged to one of the most prominent figures of the Protestant Reformation.

A 30-foot-high stream of chocolate flows continuously at the Lindt Home of Chocolate.

CERN's beautiful, bending sculpture is a tribute to the spread of knowledge.

Large Hadron Collider and the Birthplace of World Wide Web.

These spooky and unusual stone formations create an underworldly landscape.

Over 100 towers were built in Bologna during the Middle Ages, but only 22 survive.

Montmartre's sole surviving windmill became an iconic landmark for 19th-century painters, artists, and bohemians.

This massive library holds what was once the largest book collection in the world.

When this monument to Slovenia's national poet was erected, it's said to have sparked the ire of nearby church authorities.

There's something in the air as history repeats itself at this museum dedicated to the Swedish pop band.

A well-worshipped shrine to the Virgin Mary nestled inside the last of Zagreb’s historic gates.

A glimpse into the festive and private lives of medieval Europe.

Once a resting spot for King Fernando VII.

The remains of this misplaced church were moved here stone by stone.

Madrid's last horchata kiosk is a blue-and-white beacon of refreshment.

The only urban monument in the world designed by the great surrealist painter Salvador Dalí.

An electrical pylon under whose legs a normal gauge train can run.

On Nobel Street, a miniature statue of Alfred Nobel.

The library's graceful rotunda is like a bibliophile's temple.

An intricate ceramic tile facade adorns this five-star hotel.

This palatial spiral staircase was so unusual the name "snail" was given to the noble family who built it.

Go inside to really appreciate this 500-year-old technological masterpiece.