What is physically present?
Begin with survey points, construction phases, orientation, and uncertainty.
Curated research hub
Temples and sites
How the ten were chosen
Recognition first; metrological value can outrank fame.
The selection favours places readers already know, then strength of measured geometry, native-unit evidence, and the quality of the interpretive problem. Aphaia and Pergamon make the ten because their regional standards and landscape planning teach more than some better-known ruins. Giza is the exemplar: measurements first, coupled patterns second, intention last.
01Interactive exemplarGiza, EgyptGreat Pyramid of GizaSurvey, a 440-by-280-cubit model, and one practical slope generate several celebrated ratios. The interactive treatment establishes the standard for this collection.Working measureEgyptian royal cubitPattern440 by 280 cubits; 14:11 half-profile; 5½-palm seked02Contested Greek moduleAthens, GreeceThe Parthenon and AcropolisThe most famous test case for Greek architectural proportion is also a warning against forcing a preferred foot or golden ratio onto every dimension.Working measureAttic or other candidate Greek footPatternA recurring 4:9 family appears in major dimensions and column spacing03Roman spatial geometryRome, ItalyThe PantheonA spherical interior concept, a vast concrete dome, and Roman modular practice meet in one of antiquity’s clearest geometric experiences.Working measureRoman pes and subdivisionsPatternThe 43.30 m interior diameter equals the height to the dome apex04Solar geometry and unit debateWiltshire, EnglandStonehengeThe world’s best-known prehistoric stone circle combines strong solar geometry with the enduring and disputed claim that megalith builders shared a standard yard.Working measureMegalithic yard hypothesis, 0.829 mPatternConcentric settings and a midsummer-sunrise to midwinter-sunset axis05Astronomy and disputed modulesSiem Reap, CambodiaAngkor WatA world-famous temple mountain joins hydraulic landscape, cardinal orientation, equinox light, and contested claims that architectural lengths encode solar numbers.Working measureKhmer hat or cubitPatternWest-east orientation, equinox sunrise, and proposed calendrical dimensions06Phased Egyptian architectureLuxor, EgyptKarnak Temple ComplexA long-lived sacred landscape makes continuity and change in Egyptian building practice impossible to ignore.Working measureRoyal cubit, palms, and digitsPatternAxial planning and repeated modules vary across building campaigns07Mesopotamian scaleUr, southern IraqZiggurat of UrMonumental mud-brick architecture connects scribal measures, brick production, labour, and the managed geometry of platforms.Working measureNippur-cubit family and nindanPatternTerraces, stairways, brick modules, and sexagesimal scale08A unit in the landscapeOlympia, GreeceThe Stadium at OlympiaA racecourse where a unit name, a count of feet, and an excavated distance meet.Working measureOlympic pous and 600-foot stadionPatternA named 600-foot race length realised through a regional foot09Regional Greek moduleAegina, GreeceTemple of AphaiaLess famous than the Parthenon, Aphaia earns its place because it gives a focused test of a larger regional Greek foot.Working measureAeginetan pousPatternA regional foot tested against one coherent temple plan10Hellenistic city and landscapeBergama, TürkiyePergamonRecognition yields here to metrological interest: a royal hill city connects architectural modules, terrain, long sight lines, and engineered water.Working measurePhiletaeric pousPatternTerraces, steep theatre, sight lines, and pressure-fed water across a hill city
Beyond one building
When the measured object is the distance between sites.
Eratosthenes’ Alexandria-to-Syene baseline turns route knowledge and stadia into a planetary calculation. The surviving method is brilliant; the exact modern length of his stadion is not settled.
Reading discipline
Every site uses the same three-part test.
Which unit is historically plausible?
Use a sourced regional standard. When the unit is reconstructed, the label and uncertainty remain visible.
What does the pattern establish?
A numerical fit establishes a relationship. Cultural meaning and design intention need additional evidence.