A stunning gilt bronze relief denounced by Hitler as "degenerate art"—even though it was dedicated to the Nazi leader.

This is part of the Francke Foundation Museum, a curiosity cabinet filled with different scientific and natural wonders.

A two-inch thick solid brass rod that extends an astounding one kilometer straight into the earth.

Several of these strange cone-shaped bunkers can still be seen around the former Nazi headquarters.

This Berlin island is home to a flock of free-roaming peacocks, as well as a historic ivory folly.

When the rain falls, this drain system turns into a musical instrument.

A moving and macabre World War I-era painting by the great artist Otto Dix.

The highest cold-water geyser in the world.

Slaughterhouse Five opens its dank doors to fans of Kurt Vonnegut.

The many—66 to be exact—faces of the German forest.

This "floating railway" is one of the world's oldest monorail systems.

The oldest Jewish cemetery in Europe survived Hitler's Germany.

Legendary site where an evil bishop was devoured by rodents.

The "Prussian Versailles" that is as glorious today as when it was built.

Centuries of warfare, tragedy, executions, and poetry come together in this 13th-century fortress.

From morgue to urn, watch the whole process at this unusual educational attraction.

A preserved Nazi labor camp now has a Holocaust museum on site and memorials to the thousands that died while imprisoned at the camp.

This natural "sea of stones" was once used by the Romans as a quarry.

A former Nazi lookout tower with a magnificent view of the Rhineland.

A Nazi concentration camp and Anne Frank's place of death.

A tiny basalt mountain with an observation tower overlooking the beautiful Bavarian countryside.

Money made from smuggling sugar helped create this wondrous rock maze in honor of the Prussian Queen Louise.

An officers prison camp believed to be impregnable by the Germans saw over 30 successful escapes.

Final resting place of the humble physicist who discovered X-rays, and made the invisible visible.