The three colorful women depict characters from a beloved children's story.

Wooden cutouts of the fictional family from the popular Swedish comic strip take a stroll along the side of the road.

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

A replica of the home of a famous fictional troll family.

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

The tombstone of an unfortunate explorer who disappeared in the Paris Catacombs.

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

An enormous Polaroid picture adds an artistic flair to Rotterdam.

A mud statue stands in the dark tunnels, seeming to hold up the weight of the city above.

A giant floating rubber duck-bunny painted with a different design every year.

From afar it looks like someone's hat blew into the water, but closer inspection reveals a giant floating sculpture.

A rare rune stone dedicated to a woman.

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

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

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

Legend says this fabled well held part of a mythical Norse tree.

The second-largest collection of runic calendar staffs in Sweden.

A large collection of ancient runestones decorates this university courtyard.

This cairn marks the only place where Central European Time, Eastern European Time, and Further-eastern European Time meet.

What looks like a birch tree smushed between two pieces of glass often confounds commuters.

This giant subway sculpture celebrates the fruit that inspired the theory of gravity.

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

This centuries-old rooster survived a devastating fire.

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