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.

This Venice bookstore has resigned itself to constant flooding by keeping its books in bathtubs and boats.

A small window on Via Piella offers a lovely and rare peek at Bologna's lost canals.

Royals, rebels, and artists have all conversed at this grand 19th-century Viennese coffee house.

A rebuilt Roman city that was once the largest Roman settlement in the region.

A monument dedicated to a lone, brave invader.

One of the most notable figures in the Wurstelprater’s history is often assumed to be a fictional character.

The medieval "dragon" on an Austrian city's coat-of-arms comes to life in a fountain.

A historic and beautiful Art Nouveau chamber in a historic railway station.

This curious building hides eclectic details like medieval gargoyles alongside naked angels and Art Nouveau mosaics.