Amiens Cathedral Labyrinth

The octagonal labyrinth of Amiens Cathedral — 12.1 meters wide, created in 1288 — traces an identical path to Chartres but in an octagonal frame, demonstrating how Gothic master builders transmitted sacred geometric knowledge while varying the container. Destroyed by church authorities in 1825 (who found the noise of children playing on it intolerable), it was faithfully restored to its original design, including the central inscription naming the three master builders: Robert de Luzarches, Thomas de Cormont, and Renaud de Cormont. At 320.77° Giza bearing, Amiens Cathedral — the largest Gothic cathedral in France by interior volume — sits on the Somme River floodplain, where limestone aquifers create conditions analogous to Chartres.