An aerial photo shows Shiite pilgrims gathering between the holy shrine of Imam Hussein, top, and the holy shrine of Imam Abbas, bottom, in Karbala, Iraq on Sunday. Millions of Shia Muslims from around the world are making the journey to the holy shrines of their saints Hussein and Abbas in Karbala, Iraq, in a pilgrimage that is as much about camaraderie as religion. The annual commemoration, called Arbeen, brings more pilgrims each year than the Hajj, in Saudi Arabia, yet it is hardly known outside Islam. (PTI)