1163
Notre-Dame foundation stone laid
Pope Alexander III, in exile from Rome, laid the cornerstone of the new Paris cathedral in person. The crowds around the old bishop's palace on the Seine's island watched masons begin a project none of them would live to see finished. The papal blessing lent the cathedral a prestige that attracted donations from across France, helping fund the ambitious double-aisled nave that would make Notre-Dame one of the largest churches in Christendom.
Ayyubid power grows in Egypt
Saladin's uncle Shirkuh, the formidable Kurdish general serving the Zengid atabeg of Mosul, consolidated Ayyubid military power within Fatimid Egypt, holding the ancient title of vizier while the young Shia caliph reigned as little more than a puppet behind palace walls. When Shirkuh died suddenly - reportedly from gorging himself on rich food - his nephew Saladin inherited the position and quietly began his methodical, patient rise to supremacy.
Founding of the Cathar church at Saint-Felix
Cathar perfecti from across Languedoc met at Saint-Felix-de-Caraman and formalized their separate dualist church, with bishops and deacons of their own. The council effectively declared independence from Rome. Within half a century the area would be devastated by the Albigensian Crusade. The Cathar church's organizational structure, mirroring that of the Catholic hierarchy, demonstrated how deeply the heresy had penetrated the social fabric of southern France.
Council of Tours
Alexander III convened seventeen cardinals and more than a hundred bishops at Tours to reaffirm his legitimacy against the imperial antipope and to condemn the Cathar heresy spreading through Languedoc. It marked the first formal church action against the Cathars. The council's denunciation signaled that Rome viewed dualist heresy as a structural threat to Christian society, not merely a local aberration that could be handled by diocesan authority.