Jerusalem's ancient Armenian community experienced a major increase in numbers as survivors of the Armenian genocide perpetrated by the government of the Ottoman Empire beginning in 1915 found refuge in Jerusalem's Armenian Quarter. The industry was started by David Ohannessian and other refugees from Kütahya, a city in western Anatolia noted for its Iznik pottery. The tiles decorate many of the city's most notable buildings, including Ohannessian's tiles for the Rockefeller Museum, Mardigian Museum of Armenian Art and Culture, and American Colony Hotel, and the House of the President of Israel.