Aerial view of Kaaba on Eid Al-Adha

MECCA, SAUDI ARABIA - SEPTEMBER 2: An aerial view photo shows Macca Royal Clock Tower Hotel near the Kaaba, Islam's holiest site, located in the center of the Masjid al-Haram (Grand Mosque) during Hajj (Islamic pilgrimage) in Mecca, Saudi Arabia on September 2, 2017 on the day, one of the Muslims most important holiday, Eid Al-Adha (Feast of Sacrifice). Muslims worldwide celebrate Eid Al-Adha, to commemorate the holy Prophet Ibrahim’'s (Prophet Abraham) readiness to sacrifice his son as a sign of his obedience to God, during which they sacrifice permissible animals, generally goats, sheep, and cows. Eid-al Adha is the one of two most important holidays in the Islamic calendar, with prayers and the ritual sacrifice of animals. (Photo by Ramazan Turgut/Anadolu Agency/Getty Images)