Sultan Ahmed Mosque
The mosque was built on the site of old Mamluk buildings in Cairo's Citadel between 1830 and 1848, although not completed until the reign of Said Pasha in 1857. The architect was Yusuf Boshnak from Istanbul and its model was the Sultan Ahmed Mosque in that city. The ground on which the mosque was erected was built with debris from the earlier buildings of the Citadel.