This innocuous-looking button may have been used to assassinate a king.

Once the center of power for the region's various factories.

Every day is like Christmas on this street where the traditional Neapolitan nativity scene comes to life.

A popular legend claims that the famous pizza was invented at a restaurant in this alley.

This ancient market is often referred to as the oldest shopping mall in the world.

This declassified Cold War bunker hosts a large collection of Swedish aircraft.

The place to be if you love vintage Swedish cars.

One of the world's few mounted blue whales, its jaws are hinged open allowing visitors to descend into a lounge.

Dedicated to a song so popular the request to "Play Shoreline" became part of Swedish culture.

The charming storybook building now houses a small police museum.

There are no crying babies in this neck of the woods.

A novel collection of medical curiosities housed in an 18th-century surgeon training academy.

Copenhagen's celebrated theme park and gardens.

Bored potato-guarding Nazis etched their thoughts onto a brick storage building in Copenhagen's Meatpacking District.

Pre-Nazi swastikas adorn the sculpted pachyderms flanking this brewhouse portal.

A Gothic-inspired fish market is Gothenburg's best place to find loaves and fishes.