Al-Idrisi
1100–1165 — Morocco/Sicily
Era: Medieval
Brilliance: 8/10 | Stewardship: 7/10 | Composite Index: 56
Most accurate world map of the medieval era. Tabula Rogeriana.
"The world is round like a sphere, and water and land maintain equilibrium upon it."
Biography
AlIdrisi was a medieval Moroccan cartographer and geographer who created the Tabula Rogeriana, the most accurate world map of the medieval era, commissioned by Norman King Roger II of Sicily. His systematic approach combined direct observation, merchant accounts, and mathematical precision to map known territories with unprecedented accuracy. His work remained the definitive geographic reference for centuries, influencing both Islamic and European scholarship.
Key Facts
- Created the Tabula Rogeriana (Roger's Map) in 1154, depicting the known world with 70 regional maps
- Traveled extensively through North Africa, Spain, and the Mediterranean to gather firsthand geographic data
- Served at the court of King Roger II of Sicily, one of the few places where Christian and Muslim scholars collaborated
- His geographic treatise 'Nuzhat al-mushtaq' (Book of Roger) remained the authoritative geography text for 300+ years
- Accurately calculated Earth's circumference and mapped coastlines with remarkable precision using mathematical principles
Medieval mapmaker who charted the world more accurately than most modern people.
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