The Nuruosmaniye Mosque is an 18th-century Ottoman mosque located in the Çemberlitaş neighbourhood of Fatih district in Istanbul, Turkey, which was inscribed in the Tentative list of World Heritage Sites in Turkey in 2016. Designed by a Greek non-Muslim architect named Simeon Kalfa, the Nuruosmaniye mosque was the first monumental Ottoman building to exemplify the new Ottoman baroque style, which introduced baroque and neoclassical elements from Europe. The mosque's ornamentation and its curved courtyard display its baroque influences.