The Institute of Hungarian Literary and Cultural Studies at the University of Debrecen formed a research group in 2010 in order to launch the research of Hungarian lieux de mémoire. This paper was written within the frameworks of the research group. Its basic hypothesis is that the identification of Hungary as the Bastion of Christendom is an established part of Hungarian collective memory. This paper attempts to demonstrate the changes of this lieux de mémoire, regarding its meaning and function, from its formation up to the present day.