Cupola
Architectural structure on top of a building / From Wikipedia, the free encyclopedia
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For other uses, see Cupola (disambiguation).
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.[lower-alpha 1]