Stockholm's decidedly unique public transit system has doubled as the world's longest art gallery for decades.

A shining memorial to a Belgian hero is said to bring luck to anyone who touches it.

Drink among marionettes at this pub inside a historic puppet theater.

Brussels' favorite peeing boy has a sister.

A little sculpture with a large wardrobe.

The Devil’s own choice when he needs a drink in Brussels.

A quartet of brightly colored mythical beasts stand sentry at this gateway.

The building where Mary, Queen of Scots was said to have bathed in white wine.

The most loyal of little dogs, or a Victorian era publicity stunt?

This fairytale-like structure is the last turf church ever constructed in Iceland.

This plaza is home to a number of works, including Montpellier‘s own Arc de Triomphe.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

In one of the smallest countries in the world stands an original Salvador Dalí sculpture.

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

The chaotic studio of one of the 20th century's most important artists has been preserved down to the dust.

The somber sculptures commemorating Irish Famine on the river Liffey in Dublin.

An 80-year-old plane tree is devouring an iron bench at Ireland's oldest law school.

A moody and picturesque riverside ruin overgrown with vegetation.

Twisted girders are all that remain of an Icelandic bridge that was wiped out by a combination of volcanic heat and glacial floods.

A stratovolcano located in the south of Iceland, with a long history of charted activity and a rich mythology attached.

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

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