English: Muhammad Sadiq Bey was the first person to take photographs of Mecca, Medina and the Hajj. An Egyptian army engineer and surveyor, he was also the treasurer of the Egyptian Hajj caravan, travelling numerous times to the Hijaz. Using a technique first invented in the 1850s, Sadiq Bey took his first photographs in 1861 using glass plate negatives, especially useful for large-format frames. His most important photographs, of both the buildings and interior of the sanctuaries at Mecca and Medina, as well as sites at Arafat and Mina, were taken in 1880 and 1881. For the first time, the pilgrimage and the holy cities were precisely and realistically documented.