10^th century and circa 1000 in Poland. Traditions of the research and the starting point for CARE Polonia

The Institute of History of Art at Jagiellonian University in Cracow has joined the CARE project in 2015/2016 via cooperation with Jana Mařiková-Kubková at Archaeological Institute in Prague. Actually, 17 churches have been identified and 4 another archaeological sites with some architectural evidence are awaiting a full revision. The current work on the CARE project in Poland involves collecting and analyses of the documentary evidence of archaeological sites. The working team has been cooperating with colleagues from the Institute of Archaeology and Ethnology of Polish Academy of Science (mainly Poznań and Warsaw) and the archaeological stations on Wawel Royal Castle in Cracow, Ostrów Lednicki etc. The Christian architecture appeared within the political activity of Piast's house and forming the early state during the second half of the 10^th century. The article presents the most interesting buildings in the context of their function and the broader relationships, also Christianization and church organization after baptism of duke Mieszko in 966.