856
Dec. 22, Damghan, Iran: earthquake killed 200,000.
893
March 23, Ardabil, Iran: earthquake killed about 150,000 people.
1138
Aug. 9, Aleppo, Syria: deadly earthquake claimed lives of 230,000 people.
1727
Nov. 18, Tabriz, Iran: about 77,000 victims killed in deadly earthquake.
1978
Sept. 16, Tabas, Iran: earthquake destroyed city in eastern Iran, leaving 15,000 dead.
1990
June 21, northwest Iran: magnitude 7.7 earthquake destroyed cities and villages in Caspian Sea area. At least 50,000 dead, over 60,000 injured, and 400,000 homeless.
1997
May 12, northeast Iran: severe earthquake measuring 7.3 in magnitude left more than 1,500 people dead and at least 4,460 injured.