This airport currywurst stand is made out of retro airplane parts.

At this exhibit on the world of poison, venomous animals steal the show.

Mozart's skull may be held in this collection, but definitive proof continues to elude scientists.

The famous sculptor left his mark on this Italian wall in an internationally protected example of street art.

This Polish cave has housed a dragon, a brothel, and an enduring legend.

A modern reimagining of a medieval city gate.

Inside this metro station is a section of the city's former medieval fortification.

Wind power station for making famous Ketel One vodka.

These lights mark the area of Rotterdam that was bombed and burned in 1940.

This chimerical bridge/tunnel appears to dead end right into the sea.

Swedish skyscraper with a 90° twist.

Early habitat dioramas and home of the elusive gaff, the skvader.

These airport hangars are now a bustling shopping center with only hints of its past still lingering.

Sweden's largest optical telescope sits on a rooftop in Stockholm.

Inside this church, a monument honors the first burial site of the famed philosopher.

Dine on food tied to Viking history and legend at this subterranean Stockholm spot.

A tombstone on the grounds of the royal castle marks the burial site of a Swedish king's beloved dog.

This giant crucifix is like U2's Joshua Tree for Swedish death metal fans.

The internet as provided by a James Bond villain.

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