William Blake claimed to have painted this gothic masterpiece after encountering this nightmarish being in a vision.

A magical sinkhole on the Yucatán Peninsula is adorned with mini waterfalls and hanging vines.

This 700-year-old structure is one of the most unique architectural and historic monuments in Gdańsk.

This vast masterpiece of Moroccan architecture spreads across 20 acres.

This resort community was known as the "Black Eden of Michigan."

One of the cave cities of Crimea, built by the Goths in the sixth century.

Fall down the rabbit hole into a surreal journey of human consciousness "from ass to soul."

In this brilliant blue spring in Germany, legend has it that a sad mermaid learned to finally laugh.

The small alleys in Lübeck's Old Town are a result of medieval urban sprawl.

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

A small square plaque marks a failed assassination attempt that could have changed history.

The abandoned mine where American troops discovered a treasure trove of art and artifacts hidden by the Nazis.

This century-old cinema house has a marquee that has been hand painted by a single man for over 25 years.

A wunderkammer of exoticism immortalized by Tom Waits.

Executed in 1401, Exhumed in 1878, Stolen in 2010.

The world's most delightful not-NOT-religion welcomes visitors to the town of Templin, just like its more stoic peers.

This temple to the sturm and drang of Richard Wagner contains a dragon's cave and reptile zoo full of living "dragons."

A castle from the Holy Roman Empire that hosts traveling youth... in its stables.

This ancient ruined monastery has been destroyed by fire so many times that it seems like God hates it.

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

Among the ostentatious rococo ornamentation of this church, an image of death cuts the life-thread.

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

Explore the complex ecology of this multifaceted nature preserve by riverboat.

The patron saint of spinsters grasps a container of dried blood.