Tholos (architecture)

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A tholos (from Ancient Greek θόλος (thólos) 'conical roof, dome'; pl. tholoi; Latin: tholus; pl. tholi) is a form of building that was widely used in the Greco-Roman world. It is a round structure with a circular wall and a roof, usually built upon a couple of steps (a podium), and often with a ring of columns supporting a conical or domed roof. It differs from a monopteros (Ancient Greek:ὁ μονόπτερος from the Polytonic: μόνος, only, single, alone, and τὸ πτερόν, wing), a circular colonnade supporting a roof but without any walls, which therefore does not have a cella (room inside). Both these types are sometimes called rotundas. An increasingly large series of round buildings were constructed in the developing tradition of classical architecture until Late antiquity, which are covered here. Medieval round buildings are covered at rotunda. From the Renaissance onwards the classical tholos form had an enduring revival, now often topped by a dome, especially as an element in much larger...

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