There's a rhyme and reason to the stained glass that's tied into the other symbolic elements embedded in the architecture. For example, the color scheme shifts

There's a rhyme and reason to the stained glass that's tied into the other symbolic elements embedded in the architecture. For example, the color scheme shifts as you pan from the nativity side through to the passion side. The lower panels are not totally abstract; there are vague shapes that sort of remind you of figures, flames, etc. but then it tends to pivot towards full geometric abstraction as you raise your head. Like the Mezquita in Córdoba, it's hard to get a sense of how intensely all the combined elements make an impression just from photographs.