Pope Urban II (with Peter the Hermit) preaches the crusade at Clermont, by Francesco Hayez (1835, Turin, Palazzo Reale)
Hand grenades for "Greek Fire," with caltrops from the fortress at Chania, Crete (10-12th cent.; National Historical Museum, Athens)
The Taking of Jerusalem by the crusaders, 15th July 1099, by Émile Signol (1847; Palace of Versailles)