The Great Mosque, Cordoba, Spain: Mihrab. The focal point in the prayer hall is the famous horseshoe arched mihrab or prayer niche. A mihrab is used in a mosque to identify the wall that faces Mecca—the birth place of Islam in what is now Saudi Arabia—which Muslims face toward during their daily prayers. The mihrab in the Great Mosque of Cordoba is framed by an exquisitely decorated arch behind which is an unusually large space, the size of a small room. Above is a dazzling gold mosaic dome.