The palace for King Gustav III was never completed, but the foundation remains tucked away in this city park.

The apartment where Pippi Longstocking came to life.

Enormous ants wielding giant pine needles guard a Stockholm real estate company's office.

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

Eat a Nobel banquet from any year in the basement of Stockholm's City Hall.

It is said that each of the white stones in the red facade of this medieval house represents the head of a murdered Swedish noble.

Street artists transformed this abandoned industrial neighborhood into one of Europe's largest graffiti exhibitions.

The internet as provided by a James Bond villain.

An ancient Viking runestone hidden in plain view in Stockholm's old town.

Sweden's "good old days" painstakingly re-created in a model village.

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

An illuminated manuscript comprising the life's work of a lone monk, inexplicably decorated with a portrait of Satan himself.

The celebrated eyesore created by starry-eyed sweethearts.

With a history of slaughter, feast, and famine, remnants of the pork industry decorate this area--even its church.

The tradition of open-air secondhand and antiquarian bookselling in Paris dates back to the Renaissance.

A popular shrine where the Blessed Virgin allegedly appeared in 1830, displaying a holy armchair and two incorruptible remains of Lady Saints.

Twelve grave-faced marble angels guard the emperor's tomb at Les Invalides.

The highest point in Belgium is a staircase to nowhere.

Brussels' favorite peeing boy has a sister.

Climb inside an iron crystal magnified 165 billion times its normal size.

This aromatherapy shop and mini-museum cofounded by the Sigur Rós frontman documents Icelandic history through scents.

This stunning concert hall has become a symbol of Iceland's national recovery.

If a glacial river suddenly diving into a sheer chasm via a dramatic, multi-stage waterfall isn't peak Iceland, it's certainly close.

This valley of hot springs and boiling mud pots is home to the record-holding "Geysir," which originated the English word.