A World War II evacuation tunnel turned into a history display of Croatian state and people.

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

This 135-year-old weather station studied the effects of the climate on human health.

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

A public work of art that also provides some relief from the summer heat.

Inspired by the Rialto Bridge in Venice, these three clustered bridges were just one part of a Slovenian architect’s grand vision.

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

The largest ice cave in the world is thought to be the entrance to hell according to Austrian legend.

An Italian geologic wonder that served as the inspiration for the landscape of Dante's hell.

Five candy-colored villages on the Italian Riviera.

On the walking path from Monterosso to Vernazza, a small shrine dedicated to feline friends.

This natural "sea of stones" was once used by the Romans as a quarry.

A former ironworks that was the first UNESCO industrial site.

One of Frank Lloyd Wright's final works was this UFO church.

Once a slice of Cold War-era military history, this museum is finding its future in the stars.

The world’s largest truck stop includes a barber shop, chiropractor, and a huge museum with antique trucks.

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

Destroyed numerous times, this centuries-old bridge has always been rebuilt with its original design.

These giant metal horses graze on a hilltop near the Montana highway.

A fitting attraction for the corn capital of the world.

Browse through a century of this principality's first popular export.

This is not only one of the oldest collections in Europe, but also possibly the most beautiful.

Bullet holes in the church wall are a reminder of the violence that followed the assassination of a high-ranking Nazi officer.

A plaque marks the spot where the saint was shoved off the Charles Bridge and into the river.