In architecture, a cupola (pron.: /ˈkjuːpələ/) is a small, most-often dome-like, structure on top of a building. Often used to provide a lookout or to admit light and air, it usually crowns a larger roof or dome.
The word derives, via Italian, from the lower Latin cupula (classical Latin cupella from the Greek κύπελλον kupellon) small cup (Latin cupa) indicating a vault resembling an upside down cup.
Vatican Cityi/ˈvætɨkənˈsɪti/, or Vatican City State, in Italian officially Stato della Città del Vaticano (pronounced [ˈstaːto della t͡ʃitˈta del vatiˈkaːno]), is a landlockedsovereigncity-state whose territory consists of a walled enclave within the city of Rome. It has an area of approximately 44 hectares (110 acres), and a population of just over 800. This makes Vatican City the smallest internationally recognized independent state in the world by both area and population. The current Head of State and Government of the Vatican City State is His Holiness Pope Francis.