This small statue hints at the incorrect origins of the lush landscape park surrounding it.

A king's bloodstained shirt is among the gruesome collection of artifacts displayed below Stockholm's Royal Palace.

A simple stone remembers one of the most menacing horses in the Swedish military.

A wooden street sign is the last remnant of this 400-year-old alleyway.

This gem from the industrial age helps visitors and residents alike traverse hilly Stockholm.

A plaque marks the house in Stockholm where the French philosopher René Descartes lived up until his death.

The discovery of an old wall led to the creation of this fascinating museum about the city in the Middle Ages.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

Although rarely used, there is still a hidden room for the royal family at the Stockholm central station.

A tour of underground Berlin takes you through WWII air raid shelters and tunnels used to smuggle people out of East Germany.

Hamburgers are intensely proud of their tunnel beneath the river.

This kaleidoscopic mural shows Bob Dylan throughout his transition from young troubadour to Nobel laureate.

One of the coolest murals in Minneapolis.

This Minnesota town celebrated the state's 100-year anniversary by creating a massive ode to nature's smartest bird.

A 12th-century church with a medieval fresco and an intriguing “Greek runestone.”

Part of an abandoned19th-century fortress hides in plain sight inside a modern office building.

Sound travels strangely in this underground whispering gallery.

This mysterious runestone embedded in a church wall is linked to the medieval cult of Saint Erik.

This tiny Swedish troll protects the land and all who wander within it.

This wonky bit of historical taxidermy is experiencing a second life online.

"Only the dead get off at Kymlinge."

The trailblazing Swedish businesswoman created a beloved minty candy called polkagris.

A heated statue pays tribute to one of Sweden's great actresses.

This homeless brass fox tugs at your heartstrings from the foot of a Stockholm bridge.