Readers are invited to consult the following book by:
Giovanni Curatola & Gianroberto Scarcia (Translated by M. Shore, 2007). The Art and Architecture of Persia. New York: Abbeville Press. Order from Amazon.
As noted by Professors Curatola and Scarcia a common theory postulates that:
“…domed spaces in Christian buildings in Europe derive from the Armenian model, which, in turn, comes from Sassanian Persia: This can be attributed to geographic proximity and also to the fact that for long periods Armenia was contained within Eranshahr. “ (Curatola & Scarcia, page 92, 2007).
Numerous examples of the earliest church architecture can be seen in Armenia and Iran today: