This statue and park honor the Swedish chemist Jacob Berzelius, one of the founders of modern chemistry.

The 19th-century home of Count and Countess von Hallwyl is now a museum.

The Swedish flag over this small naval fort signals that the nation is at peace.

Sweden's "good old days" painstakingly re-created in a model village.

Now a hotel, this former bank was the site of a robbery that spawned a psychological phenomenon.

It houses the remains of a 17th-century version of the Titanic.

A temporary art piece to celebrate LGBTQ Pride is now a permanent part of Stockholm's traffic landscape.

A golden plaque marks the site of the mysterious unsolved assassination of the former Swedish prime minister.

Dublin's most modern, visually spectacular bridge is modeled after Ireland's national emblem.

The modern birthplace of Irish freedom.

Amidst the bustling streets of Dublin, there is a hushed garden that is dedicated to "All those who gave their lives in the cause of Irish Freedom."

This line of 12 tower mills described in the story of Don Quixote is among the most iconic landscapes in Spain.

Whether they are bulls or pigs, these ancient animal sculptures are fascinating relics.

This small and often-overlooked museum holds some of Spain's finest artistic treasures.

Today, Kent's medieval monarchs hold court on a busy pedestrian thoroughfare—or at least their statues do.

Sometimes called the Banksy of Madrid, Muelle was a pioneer of street art in the Spanish city.

England's steepest street has such a drastic incline that locals tie their parked cars to lampposts when it gets icy.

The oldest working mechanical clock in the world.

Ancient human remains unearthed around the iconic monument.

The oldest residential street in Europe also features an optical illusion.

This pedestrian walkway cuts through a cemetery and over several burial vaults.

Recently restored menagerie of Victorian-era beasts.

An ornate doorway leads to the former site of one of the city's oldest society of merchants.

A 142-foot-tall Q-tip on Bristol's skyline.