La Saint-Chapelle is absolutely stunning. I'd love to see the second floor that's adorned in all that stained glass. The height of the ceiling alone gives it such a haunting feel and I can't imagine what visiting felt like for those who lived in "small, dark stone" homes you spoke of, in that day and age. It was more than likely based off the bible, which mentioned cubits.. "The measurements for the cathedrals and other holy structures where measured in different units, the Amien Chathedral used a roman foot." What was the "difference" between cubits and a roman foot?