Walk to Canossa
The Humiliation of Canossa, (), sometimes called the Walk to Canossa (/"Kanossa") or the Road to Canossa, was the ritual submission of the Holy Roman Emperor, Henry IV to Pope Gregory VII at Canossa Castle in 1077 during the Investiture controversy. It involved the Emperor journeying to Canossa, where the Pope had been staying as the guest of Margravine Matilda of Tuscany, to seek absolution and the revocation of his excommunication.