Muslim pilgrims pray around the holy Kaaba at the Grand Mosque, during the annual hajj pilgrimage in Mecca July 27, 2019. According to the Muslims holy book the Koran, the Kaaba was built by Abraham and his son Ismael, after Ismael had settled in Arabia. Millions of Muslims have arrived in Saudi Arabia to perform their Hajj. Photo by Ashraf Amra//APAIMAGES_10092/1907281007