Select and identify a work of architecture in the Medieval period wherein light was used to import a sense of both spiritual and intellectual signification. Describe at least two elements of form featured in the work (e.g. materials, techniques, iconography, etc.) and explain thoroughly how such elements are employed to convey spiritual and intellectual meaning.

Select and identify a work of architecture in the Medieval period wherein light was used to import a sense of both spiritual and intellectual signification. Describe at least two elements of form featured in the work (e.g. materials, techniques, iconography, etc.) and explain thoroughly how such elements are employed to convey spiritual and intellectual meaning.