Both cathedrals address the universe in similar ways. The cross structure of the cathedrals reflect Christ, perhaps the Duomo in a more defined way, indicating locations of Christ's head, hands, and feet. Both cathedrals have geometric, labyrinthine floor patterns. This could symbolize the search for truth, or perhaps the complexity of religion. The floor pattern at Florence uses color and rounded elements, while Amiens uses darker, straight-lined patterns, staying true to their Renaissance and Gothic design influences.
The cathedral at Amiens literally comes to a point, and has a sense of hierarchy as one would walk through the building. This gave me the idea to use symbols of fire and clouds to represent heaven and hell; heaven is literally higher thus giving a vision of hierarchy, while the idea of walking during from the street during this war stricken time in France and deeper into the church suggests the idea of the church a safe haven. The religious implications of heaven and hell is appropriate for the church in this context, suggesting being saved when coming into the church.