Armenian Church of the Holy Apostles, Kars: the drum with conical roof

NOTES: Also known as the Cathedral of Kars, this Armenian church was converted into a mosque by the Ottoman Turks in 1579 and later served as a Russian orthodox church, the Armeninian cathedral, and was used as a warehouse from the 1930s. It housed a small museum of Kars' antiquities from 1963 until the late 1970s, then stood derelict for about two decades until its conversion into a mosque in 1998.