The tracery on the windows of La Sainte-Chapelle, in Paris, France shows foliations: a leaf pattern common in Gothic architecture. "Foliations in Tracery. Sainte Chapelle, Paris, A. D. 1240." -Whitney, 1911

Tracery Foliations

The tracery on the windows of La Sainte-Chapelle, in Paris, France shows foliations: a leaf pattern…