A type of illusionistic ceiling or wall painting that uses perspective to create the appearance of architectural elements extending beyond the actual surface. It makes flat surfaces appear three-dimensional.
From Italian 'quadratura' meaning 'squaring' or geometric framework, referring to the mathematical precision required for the perspective calculations. The term emerged in 17th-century Italy when Baroque artists perfected these illusionistic techniques.
Baroque churches used quadratura to literally lift congregants' eyes to heaven – artists like Andrea Pozzo created ceiling paintings so convincing that visitors would crane their necks looking for actual architectural details that were pure illusion! The technique requires standing in exactly the right spot; move a few feet and the perfect illusion collapses into obvious distortion.
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