One of the earliest examples of Ottoman architecture, the Yeşil Mosque was constructed by order of the Grand Vizier Çandarlı Kara Halil Hayreddin Pasha of Sultan Murad I in Iznik. It was later completed by his son Ali Pasha. The inscription on the mosque gives the date of construction as AH 780-794 (1378-1391), and the name of the architect as Haci bin Musa.