The Kingdom of Saudi Arabia was founded by Abdul-Aziz bin Saud (known for most of his career as "Ibn Saud") in 1932. The conquests which eventually led to the creation of the Kingdom began in 1902 when he captured Riyadh, the ancestral home of his family, the House of Saud. The Saudi Arabian government, which is an absolute monarchy, refers to its system of government as being Islamic. It has a strong basis in Wahhabism, a minority school of thought in Islam. The kingdom is sometimes called "The Land of the Two Holy Mosques" in reference to Masjid al-Haram (in Mecca), and Masjid al-Nabawi (in Medina), the two holiest places in Islam.