Portal:Poland/Did you know/100

... that the National Museum of Wrocław (pictured) holds one of the largest collections of contemporary art in Poland, extending even to the museum's remodelled attic?
... that hundreds of thousands of art pieces were looted from Poland during World War II by Nazi Germany and the Soviet Union?
... that Solidarity trade union leader Lech Wałęsa was a target of fake police reports produced by the Communist secret service in the People's Republic of Poland?
... that the Keret House in Warsaw is the world's narrowest residential building?