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?