1511 Idrija earthquake
The 1511 Idrija earthquake () occurred on March 26 with a maximum Mercalli intensity of X ("Extreme"). The epicenter was around the town of Idrija in present-day Slovenia, although some place it some 15-20 kilometers to the west, between Gemona and Pulfero in Friulian Slovenia. The earthquake affected a large territory between Carinthia, Friuli, present-day Slovenia and Croatia. An estimated twelve to fifteen thousand people were killed and damage was considered severe. The earthquake was felt as far as in Switzerland and present-day Slovakia. A number of castles and churches were razed to the ground in a large area from Northeastern Italy to western Croatia. Among the destroyed buildings were the castles of Udine and Škofja Loka, the monastery of the Teutonic Knights in Ljubljana; the Zagreb cathedral was severely damaged. Blaž Raškaj, commander of the Jajce fortess, in modern Bosnia, reported to the Hungarian Estates that the earthquake had severely damaged the fortifications.