Moreover, the Prophet's Mosque, which is considered as one of the largest mosques in the world, has passed several expansions through its history, from the era of the Caliphs, Umayyad state and Ottoman Empire, until the era of the Saudi state where it is experiencing the largest expansions in its history. The Prophet's Mosque was the first place in the Arabian Peninsula used light bulbs in 1909 and is the second mosque built by the Prophet Muhammad, peace be upon him, in the first year of Hijrah, when its land was just a place for drying dates. Prophet Muhammad, peace be upon him, has designed the land of his Mosque, making its length 50 meters and width 49 meters and making its Qiblah to Al-Aqsa mosque in Al-Quds, drilling its foundations and roof by palm-leaf stalks and its pillars of palm trunks with three doors. --SPA 13:33 LOCAL TIME 10:33 GMT www.spa.gov.sa/w