A hidden art gallery in an abandoned Warsaw fort.

A group of tiny bears has occupied various spots across Warsaw's Bemowo district.

This interactive museum celebrates the iconic arcade game.

A symbolic cemetery in a suburban square marks the birthplace of Poland's WWII resistance movement.

This alluring underground library, hidden in a suburban Metro station, features a Space Age aesthetic and its own hydroponic garden.

Special benches that play Chopin's music are scattered throughout his native city.

Once home to some 250,000 volumes and priceless art artifacts, this Polish estate was a target of bombing during World War II.

Atop this library is one of the most beautiful green spaces in Warsaw.

These 18th-century paintings of Warsaw were used to reconstruct the city after World War II.

These plaques found across Warsaw commemorate the sites where executions or battles took place during the German occupation.

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

Catch a scenic view of Warsaw's Old Town from the top of a centuries-old dumping ground.

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

One of Warsaw's coolest malls was once a center for anti-Nazi resistance activity.

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

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

The final resting place of the last "gypsy king" of Poland.

A heavily politicized roundabout discussing the state of a heavily politicized country.

Warsaw's fantastically preserved gasworks...almost.

A 20th-century picture show in 3-D.

Complex tile installations designed by a renowned Polish artist in a Warsaw subway.

This museum houses and extensive collection of technology contributed by the Polish people.

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

Order “Proletariat’s Cutlet” at this communist-themed restaurant allegedly once visited by Lenin.