Annual Islamic Pilgrimage Attracts Pilgrims From Around World To Grand Mosque In Mecca, Saudi Arabia

Palestinian children perform a simulated pilgrimage celebrating the upcoming Islamic pilgrimage and Eid al-Adha festival at their school in the West Bank city of Nablus on Oct. 22, 2012. <Xinhua/Ayman Nobani>

Muslim pilgrims leave the Grand mosque after the noon prayer in Mecca, Saudi Arabia, Monday, Oct. 22, 2012. The annual Islamic pilgrimage draws three million visitors each year, making it the largest yearly gathering of people in the world.

Muslim pilgrims pray outside the Grand mosque in Mecca, Saudi Arabia, Monday, Oct. 22, 2012. The annual Islamic pilgrimage draws three million visitors each year, making it the largest yearly gathering of people in the world.

Muslim pilgrims circle the Kaaba as pray inside and outside the Grand mosque in Mecca, Saudi Arabia, Monday, Oct. 22, 2012. <AP Photo/Hassan Ammar>