The opening of the exhibition at the Royal Castle in Warsaw, entitled “36 x Rembrandt”, took place on 4 October 2019, the centrepieces of which are the paintings “Girl in a Window frame” and “Scholar at a Lectern”. Both works of art were donated to the Royal Castle in 1994 as part of Professor Karolina Lanckorońska’s gift to the Polish Nation and are usually on display in the Castle’s Lanckoroński Gallery. The exhibition also provides the occasion to celebrate the twenty-fifth anniversary of that exceptional donation. Also on show are drawings and prints lent by the Print Section of the University of Warsaw’s Library as well as the Polish Academy of Learning in Kraków.