Fossati brothers
The Fossati brothers, Gaspare (7 October 1809 – 5 September 1883) and Giuseppe (1822–1891), were Swiss architects. They completed more than 50 projects in Turkey (then the Ottoman Empire) during the Tanzimat era. They belonged to the Morcote branch of the Fossati, a prominent Ticinese family with mentions in the historical record going back to the 14th century. Gaspare is most noted for his renovation of the Hagia Sophia in Constantinople, which virtually saved it from destruction.