On April 18, 2010 with reference to the 70th anniversary of the Katyń Massacre the ceremonial opening of exhibition "The Katyń Massacre" took place in the Center of the Polish Independence Organizations at 75 Östermalmsgatan Street in Stockholm. The exhibit was prepared by the IPN’s Public Education Office. The opening ceremony was organized by the Consular Section of the Polish Embassy in Sweden and the Polish Congress in Sweden.