Plan of the Wawel palatium acc. to Z. Pianowski and J. Firlet after verification research with a marked fragment of the low wall in the south wall. Reconstruction upheld the concept of the “hall with 24 pillars”. Source: J. Firlet, Z. Pianowski, Transformations in Architecture of the Royal Residence and the Wawel Cathedral in the light of new research, Architecture and Urban Planning Quarterly, Vol. XLIV, No. 4, Wrocław 2000