A long spiraling walkway winds through the woods, and around a copper beech tree at the center.

The great Danube river starts here.

Golden cobblestones remember a time when this small alley was used to avoid having to give a Nazi salute.

These bronze pamphlets remember a remarkable group of Germans who fearlessly opposed the Nazis in the very center of their power.

These 18th century gardens tell a rocky story of the son of Odysseus.

No need to strap in for a "ride" on this walkable roller coaster.

Super-heavy Nazi architectural experiment.

Between Neo-Pagans and Neo-Nazis, these strange rock formations have a curious cult following and a very strange history.

This historic stone bridge has an entire neighborhood clinging to its sides.

Terrifying derelict military hospital once housed a recuperating Hitler.

"The most colorful grottoes of the world.

An intricate and amazing house built by architect Karl Junker.

A striking 12th-century-style castle built on the edge of a cliff.

A state-of-the-art medical facility from the Imperial era is now a derelict ruin.

This medieval castle overlooking the Elzbach river looks just like it did hundreds of years ago.