This grand manse has been transformed into a museum devoted to one of the founders of Fantastic Realism.

The housing complex served as an anti-fascist fortress during the Austrian Civil War.

A rooftop restaurant hides in plain sight atop Vienna's Palace of Justice.

The Habsburgs' royal collections of art and wonders.

Apartment complexes built into huge repurposed natural gas tanks.

This museum promotes informed contraception by documenting its often secret past.

This former insane asylum now holds a pathological anatomy museum.

Macabre museum devoted to historical Viennese murders.

The final resting place for the remains of 143 Habsburg royalty.

This oddly beautiful water cistern is a techno-temple to the wet stuff and a multimedia masterpiece.

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

These rare statues are one of the few remaining material witnesses to Old Prussian culture.

Memorial to the lost dead of Gdansk, whose resting places were destroyed during World War II.

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

A floundering Polish shipyard was once the soul of the Solidarity movement that capsized communism.

Poland's oldest salt mine has nearly everything one needs to live underground forever.

These massive moving sand dunes have swallowed an entire village and are still on the run.

A national collection of Communist-era musical posters.

This centuries-old wooden wonder was built in less than a year and is one of Europe's largest timber-framed churches.

This sprawling concrete suburb of Kraków was designed by the Soviet Union as the model proletarian city.

A huge wooden clock that is so beautiful its creator was forcibly blinded.

Crosses of all shapes, sizes and colors litter the mountain, the site of a huge yearly Orthodox pilgrimage.

This man-made mound monument was built out of soil from all across the Polish empire.

Warsaw's fantastically preserved gasworks...almost.