Compare methods

	Townscape Analysis	Isovist Analysis
Field	Urban Studies	Urban Studies
Family	Process / pipeline	Process / pipeline
Year of origin	1961	1979
Originator	Gordon Cullen (serial vision); M. R. G. Conzen (town-plan analysis)	Michael L. Benedikt
Type	Pipeline for the visual and morphological appraisal of town form and townscape	Geometric analysis of the space visible from a vantage point
Seminal source	Cullen, G. (1961). The Concise Townscape. Architectural Press. ISBN: 9780750620185	Benedikt, M. L. (1979). To take hold of space: isovists and isovist fields. Environment and Planning B: Planning and Design, 6(1), 47–65.
Aliases	Serial Vision Analysis, Townscape Appraisal, Conzenian Plan Analysis, Urban Morphological Townscape Analysis	Visibility Polygon Analysis, Isovist Fields, Viewshed Analysis (Architectural), Visual Field Analysis
Related	4	4
Summary	Townscape analysis is the appraisal of the visual and physical character of towns, combining two traditions: Gordon Cullen's 'serial vision' approach, which reads the town as a sequence of unfolding views experienced by a moving observer, and the Conzenian school of urban morphology, which dissects the town through its plan, building fabric, and land use. Cullen's 1961 The Concise Townscape argued that the art of the environment lies in the relationships and emerging views between buildings and spaces, not in the objects alone. Together the two strands give townscape analysis both an experiential, qualitative side and a systematic, morphological one.	Isovist analysis describes the experience of space by computing, for any vantage point, the exact region that is visible from it — the isovist, or visibility polygon. Introduced by Michael Benedikt in 1979, the method turns intuitive notions of openness, enclosure and prospect into measurable quantities such as the area, perimeter and compactness of the visible field. By repeating the construction across a grid of points one obtains an isovist field that maps how visibility varies throughout a building or urban space, making it a core analytic tool in space syntax, architecture and environmental psychology.