“…Sacred, royal and representative buildings of early Byzantine Christianity or the empire of Charlemagne were built in white and green, and, finally, also were the most architecturally perfect Romanesque cathedrals, created by the so-called builders of the School of Pisa and Tuscany, which appeared in the second half of the 12 th and 13 th centuries. The architectural decoration, which combined green Chełm glauconite and white Galician stone (it could be alabaster or white limestone) [Gazda, Bevz, 2019;Gazda, Bevz, 2020], brought Chełm closer to the fine examples of Byzantine and Romanesque Europe. These examples could have been known to King Daniel through direct and indirect contacts and connections with the Hungarian royal court, but also from his military expedition to the Czechia [Dąbrowski, Jusupović, 2017: 98, 110, 151, 153, 161−163, 179, 190−191, 210, 214].…”