St. Augustine's Church in Vienna is not only an architectural monument, but also a historical site with many important events in Austrian history. It was in this church that the weddings of Austrian empresses and emperors were held - Maria Theresa and Stephen of Lorraine, Elizabeth (Sissy) and Franz Joseph, Maria Louise and Napoleon. The church houses the heart of Napoleon II, as well as urns with the hearts of other rulers of the Habsburg dynasty of different historical periods (54 in total). A special place for this is called the "crypt of hearts".→