Guastavino vaulting Guastavino vaulting; source: https://www.semanticscholar.org/paper/Structure-and-history-of-Guastavino-vaulting-at-the-Ellowitz/887c3cbb533722717f1878c1d7d5ad33636af551/figure/3
Guastavino vaulting Guastavino vaulting; source: https://www.semanticscholar.org/paper/Structure-and-history-of-Guastavino-vaulting-at-the-Ellowitz/887c3cbb533722717f1878c1d7d5ad33636af551/figure/3