Were Anadoluhisarı and Gül Mosque in Istanbul both constructed by the Ottomans?
Gül Mosque Gül Mosque (Turkish: "Gül Camii" , meaning: "The Mosque of the Rose" in English) is a former Eastern Orthodox church in Istanbul, Turkey, converted into a mosque by the Ottomans.
Varda Viaduct The Varda Viaduct (Turkish: "Varda Köprüsü" ), aka Giaour Dere Viaduct, locally known as "Alman Köprüsü" or "Koca Köprü" (literally: "German Viaduct" or "Big Viaduct"), is a railway viaduct situated at Hacıkırı (Kıralan) village in Karaisalı district of Adana Province in southern Turkey. Designed and built by Imperial German engineers as part of the Baghdad Railway (Haydarpaşa Terminal, Istanbul-Baghdad), the stone arch structure is 63 km from Adana Central Station and 306 km from Konya.