The last Viking king of Denmark is buried inside the crypt of this cathedral.

A 19th-century subterranean reservoir repurposed as a contemporary art cave.

Regency-era excess on the English Coast.

A flock of peculiar-colored sheep graze in this small Swedish town.

This secret collection of the strange and occult was rediscovered in a forgotten room of an old house.

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

A colossal strolling Pinocchio that was greeted with more outrage than whimsy.

These miniature works of art are hiding in plain sight on buildings around the city.

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

A concrete mushroom that divided Stockholm residents for nearly a century.

This statue standing near Sweden's southernmost point was based on the grandmother of a modern movie star.

The largest bell in the world has been swinging high above a Cologne cathedral for almost a century.

An expansive complex of subterranean tunnels is all that remains of one of Europe's most formidable medieval fortresses.

The world's largest model of our planetary system.

The 19th-century home of Count and Countess von Hallwyl is now a museum.

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

This centuries-old rooster survived a devastating fire.

An abstract representation of weather in Sweden.

This small museum nestled inside a souvenir shop is dedicated to Sweden's most well-known toy.

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

Uppsala's adorable feline sign celebrates a popular children's book set in the Swedish city.

Legend has it this spring formed at the spot where a medieval Swedish king was killed.

A large collection of ancient runestones decorates this university courtyard.

Iron Age "bog person" preserved for over 2,300 years.