Zygmunt Zaleski Stichting was founded in 1990 in Netherlands. Its founder Roman Zaleski, son of Zygmunt Lubicz-Zaleski, established the Foundation to honor his father's memory.
As part of its activities in favour of historical treasures in Poland, the Foundation donated two eighteenth-century carpets to the Royal Castle in Warsaw. Moreover, a sixteenth-century tapestry was donated to Krakow's Wawel Castle. The Museum of Central Pomerania in Słupsk received a portrait of Helena Białynicka-Birula, painted by Stanisław Ignacy Witkiewicz from the Foundation.
The Foundation also sponsored the exhibition "The White Eagle Stanisław August Poniatowski Poland’s Last King, Collector and Patron of the Arts of the Enlightenment Era". The exhibition was organised by the Palace Museum in Compiegne, the French Palais-Musée de Compiègne, la Réunion des Musées Nationaux, and the Royal Palace Museum in Warsaw.
Thanks to the Foundation's activities, France became the owner of a valuable collection of liturgical ornaments and embroidered religious paintings, collected for 40 years by the Fruman spouses. The exhibition is currently available in the Puy-en-Velay Cathedral and contains 186 decorations from the XV-XVIII centuries, including, one of the most valuable part of Escorial’s antependium from the XVI century.
In 2016, Zygmunt Zaleski Stichting, supported the University of Warsaw in organizing the conference "Life in Palmyra, Life for Palmyra". During the event, over 30 scientists specializing in research on Palmyra, a Syrian city full of ancient monuments, destroyed in recent years by ISIS, performed.