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

A small church in Uppsala hides the grave of a renowned 18th-century astronomer.

A large collection of ancient runestones decorates this university courtyard.

A rare rune stone dedicated to a woman.

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

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

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

Ancient burial grounds of the wealthy.

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

A decommissioned submarine base makes a great space for graffiti art.

The Frank Zappa fan club erected this monument to their prog-rock hero to mark a new era of post-Soviet Lithuania.

A 15-foot-tall statue of the head of the Sopranos family greets passengers at a train station in southeastern Lithuania.

Visitors may notice something strange walking through this quaint German town.

This 170-year-old Swiss guesthouse built into the side of a mountain is best accessed by a cable car.

Liechtenstein's royal family calls this medieval alpine castle home.

In one of the world's smallest countries, a royal's personal winery is open to the public.

The oldest surviving wooden bridge over Rhine lets travelers cross easily from Switzerland to Liechtensten.

Super-heavy Nazi architectural experiment.

This futuristic German spa allows visitors to float in a pool of salt water while zoning out to underwater techno.

A towering monument to war, located on a beautifully peaceful hill.

Berlin's old airport.

Tiny memorials honor individual victims of the Holocaust.

The bunker where Hitler took his own life is hidden under this deliberately ordinary parking lot.

A monument to the man who almost killed Hitler.