Art historian Josef Strzygowski, who was the first European to thoroughly study Armenian architecture, and who placed Armenia in the center of European architecture, suggested that several churches and chapels in Western Europe have been influenced by the cathedrals of Etchmiadzin and Bagaran due to similarities found within their plans. According to Strzygowski, some examples of churches influenced by Etchmiadzin and Bagaran are the 9th-century church of Germigny-des-Prés in France (built by Odo of Metz, probably an Armenian) and San Satiro of Milan, Italy. This view was later supported by Alexander Sahinian and Varazdat Harutyunyan. Sahinian suggested that Armenian church architecture was spread in Western Europe in the 8th–9th centuries by the Paulicians, who migrated from Armenia en mase after being suppressed by the Eastern Roman government during the Iconoclasm period. Sahinian added many other medieval churches in Europe, such as the Palatine Chapel of Aachen in Germany, to the list of churches to have been influenced by the cathedrals of Etchmiadzin and Bagaran and by Byzantine decorative arts. According to Murad Hasratyan, Etchmiadzin's design was spread to Europe via the Eastern Roman Empire and served as a model—besides Germigny-des-Prés and San Satiro—for the Nea Ekklesia church in Constantinople and the churches of Mount Athos in Greece.