Climate-neutral historic buildings, Slowacki Theatre in Poland - case study Małgorzata Fedorczak-Cisak, Patrycja Haupt, Przemyslaw Markiewicz-Zahorski and Klaudia Cechini MATEC Web Conf., 396 (2024) 20010 Published online: 24 May 2024 DOI: 10.1051/matecconf/202439620010