An ultra-Orthodox Jewish man prays in front of the Western Wall, Judaism&#039;s holiest prayer site, in Jerusalem&#039;s Old City. Jerusalem&#039;s Old City is holy to the world&#039;s three major monotheistic religions, Judaism, Christianity and Islam. For Jews it incarnates ancient Israel, for Christians it is where Christ spent the last days of his life and for Muslims, it is where the Prophet Mohammad ascended to heaven. (Marko Djurica/Reuters)
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