The Chairs of Polish Legal History and of the History of Administration, and the Editorial Board of “Cracow Studies of Constitutional and Legal History” organized the conference: Constitutional History 2000–2015: New Research, New Ideas, New Perspectives at the Faculty of Law and Administration of Jagiellonian University. Constitutional history was one of Professor Stanisław Płaza’s fields of research. The 10th anniversary of his death was in 2016, and on this occasion legal historians from the Faculty decided to honour his memory. Austria, took part in the conference, All post-conference articles, prepared by their researchers from ten countries (Belgium, Croatia, Czech Republic, Germany, Hungary, and Poland, Slovakia, Spain Ukraine) will be published in volume 10 (2017) of “Cracow Studies of Constitutional and Legal History.”