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

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

No one knows who's responsible for decorating this tunnel with stuffed animals, but the people love it enough to protest their removal.

A historic hotel that made a cameo in Hitchcock's classic film has no intention of letting guests forget its fame.

A steel paper plane is all that remains of a crashed aircraft that caused an amazingly small amount of damage.

One part antique store, one part curiosities hodge-podge.

A store full of vintage and indie toys designed to bring out the kid in even the crustiest of adults.

This expansive bridge in the Canadian wilderness was originally just built for friends.

A working steam clock, one of only a few in the world, located in Vancouver's Victorian Gastown.

This sandstone mansion was the home of two of Oregon's most important pioneers.

This city square is home to Amsterdam's oldest church and a statue honoring Dutch sex workers.

Climb to the top of the world's largest seated bronze Buddha.

The world's longest outdoor covered escalator system transports commuters through Hong Kong's hilly terrain.

Teeming with illegal goods and services, this towering maze of vice is also a popular tourist accommodation.

Remnants of the most densely packed city in world history, that thrived on anarchy for 30 years.

Catacombs turned marketplace.

Once a train station along the Great Eastern Railway this vibrant coffee shop and bar is where members of London’s creative class mingle.

A recently restored Shoreditch landmark with ties to Jack the Ripper.

Giant, friendly pelicans in Central London, the most unlikely of places.

Metro station with a claim to rock n' roll fame.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

This water-tower-turned-high-end-apartment building was once the site of an early Nazi concentration camp.

Cold war icon and onetime "hole" in the iron curtain.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.