Cupola

In architecture, a cupola (/ˈk(j)uːpələ/)^[1] is a relatively small, most often dome-like, tall structure on top of a building.^[2] Often used to provide a lookout or to admit light and air, it usually crowns a larger roof or dome.^[3][4]

The word derives, via Italian, from lower Latin cupula (classical Latin cupella), from Ancient Greek κύπελλον (kúpellon) 'small cup' (Latin cupa), indicating a vault resembling an upside-down cup.^[a]

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