Notre-Dame de Reims , France ,, much , much activity with in these walls --This is a ceiling shot ,, but underneath the floors of this spot are the architects --- Unusually --the names of the cathedral's original architects are known. A labyrinth built into floor of the nave at the time of construction or shortly after (similar to examples at Chartres and Amiens) included the names of four master masons (Jean d'Orbais, Jean-Le-Loup, Gaucher de Reims and Bernard de Soissons) and the number of years they worked there, -- The labyrinth itself was destroyed in 1779 but its details and inscriptions are known from 18th century drawings info wiki , photographer is Vincent Zénon Rigaud