Extremely famous in his native country, this Cracovian painter is all but unknown beyond Polish borders.

Eighty million natural history specimens call this gargantuan museum home.

St. Mary's features one of the most spectacularly decorated cathedral interiors in all of Europe.

The former Nazi concentration camp stands as a museum to remember this dark chapter in European history.

Ruins of a German Castle on top of a towering stone pillar.

A natural wonder in south Denmark.

A rare rune stone dedicated to a woman.

The ruins of a monastery where Saint Bridget of Sweden had her revelations recorded.

The city that saw the birth of Sweden is now home to an impressive collection of work from its favorite artist.

A replica of the beloved character's house, modeled after the author's own drawings.

The official meeting point for the oddly named governing assembly of ancient Sweden.

This fantastic cave remained unexplored until 1948 when three schoolboys discovered a hidden entrance.

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

Visit the home of Sweden's beloved fictional character, Pippi Longstocking.

A large collection of ancient runestones decorates this university courtyard.

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

The first thermometer made with the almost-universal temperature scale is backwards.

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

A mysterious chasm in the heart of the ancient Roman Forum, the Lacus Curtius was once believed to be a gateway to hell.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

The original home of the Lego has a huge amusement park dedicated to the iconic plastic toy.

Tiring of digging out the door to this church for every service, it was eventually abandoned to the sands.

The northernmost point in Denmark is a turbulent sandbar created by two clashing seas.

Largest island in the Baltic Sea experiences such idyllic weather that roses bloom in the middle of December.