Several cannonballs of mysterious origins decorate two buildings in Stortoget's main square.

Sweden's oldest animated sign is still lighting up the skyline today.

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

Stockholm's tiniest statue is of a small boy looking at the Moon.

Stockholm's narrowest alley is barely over two feet wide.

Stockholm's deepest subway station is also a stunning ecological wonder.

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

It houses the remains of a 17th-century version of the Titanic.

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

If you visit Santa's village, you can get your passport stamped to show you crossed into the Arctic Circle.

Roughly 17 million letters to Santa have found their way to this Arctic Circle post office.

A small island dotted with old, historic Finnish buildings.

This irregularly shaped sea fortress has defended not one but three different sovereign states.

This endearingly discomfited urinating statue commemorates the sneaky pees had by us all.

An alien church provides much needed silence in the midst of a Finland shopping center.

Rent out a glass igloo to watch the Northern Lights like you live in the future.

A bright and wacky exhibit answers every question you may have had about human excrement, flatulence, and more.

The 400-year-old remains of the samurai invasion of Korea.

Tracking the 1,500-year history of Korea's star cabbage.

South Korea's love of the silly photograph is on full display at this goofy collection of trompe l'oeil paintings.

Plenty of old carney magic still haunts this photogenic amusement park.

A huge musical sculpture and other art installations on the National Oceanic and Atmospheric Administration grounds.

A museum dedicated to the history and exploration of both popular music and science fiction.