This nature center has one of the largest collections of native raptors in the Pacific Northwest.

A massive stairway that almost wasn't leads to one of Australia's most scenic vistas.

This gracefully curving formation looks like a massive wave that was suddenly turned to stone.

Once the path of a railway tunnel, now home to thousands of glowing insects.

An abandoned railroad tunnel is now filled with bioluminescent bugs.

Hundreds of notes give thanks to the patron saint of lost causes.

In the summer, the area around this sculpture transforms into a vibrant concert venue.

This extensive collection covers thousands of years of Polish military history.

This enormous 32-foot painting depicts Poland's greatest medieval battle in glorious detail.

A tree planted by Marie Curie is treasured by the Radium institute that she set up.

This biographical museum honors the groundbreaking scientist at her birthplace in Warsaw.

The final resting place of more than 200,000 people, this is one of the largest cemeteries in Europe.

This hidden collection of everyday objects illustrates life within communist Poland.

The Polish capital has had a deep connection to its guardian mermaid for almost a millennium now.

A tribute to the Polish insurgents who fought in the failed attempt to end their city's Nazi occupation.

The world’s narrowest house makes for an awkward, four-foot-wide living space.

Warsaw's fantastically preserved gasworks...almost.

A program of Communist glamour in post-Stalin Poland is preserved in this colorful museum.

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

Cold war icon and onetime "hole" in the iron curtain.

The walls of Germany's Parliament still show the scars of the Red Army takeover in World War II.

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

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

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