In 2016, Wroclaw was the fourth-largest city by population in Poland.
 In a report by French Respire organization, from 2014, Wrocaw was ranked the eighth most polluted European city, with 166 days of bad air quality per year
 Wrocaw has a number of notable buildings by German modernist architects including the famous Centennial Hall (Hala Stulecia or Jahrhunderthalle; 19111913) designed by Max Berg

