According to the legend, this strikingly beautiful hill has miraculous healing powers.

A remnant of the last Ice Age, this lake is surrounded by fascinating rock formations.

This cave holds a surprisingly colorful variety of geological oddities.

A bypass decorated with large wooden troll carvings.

More than 5,000 contemporary and "historic" mustards from around the world.

Three playfully immersive mini golf courses let you travel alongside your ball to the cup at this facility, which has been around since the 1950s.

Former villa and estate of James Deering developed to preserve native tropical forests.

An abandoned water sports stadium that has become a haven for graffiti and decay.

This concrete sculpture features a woman opening her heart to showcase a beautiful fern.

A museum dedicated to Norwegian music, old and new alike.

The oldest bookstore in Iceland.

Iceland's largest geothermal mud pool is a little bit haunted and a little bit dangerous.

Walk in the footsteps of the gods and straddle two tectonic plates.

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

Beneath Kraków Old Town's main square lies a hologram-filled medieval market vampire graveyard wonderland.

A monument to the three wars that led to German unification towers within a Berlin traffic circle.

The prototype for all Nazi concentration camps.

What started as a tongue-in-cheek shrine is now a full-blown museum celebrating "The Hoff" and his longtime love affair with Berlin.

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

This World War II bunker now survives as a documentation of the Nazi regime and war crimes.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

The most visited, and possibly most controversial, museum in Germany.

Designed as a reminder of one of the darkest moments in Austrian history.

The design of this beautifully crafted building was inspired by Norwegian glaciers.