Brunelleschi prioritized structural shapes above adornment in his structures, frequently defining the framework in dark gray stone to contrast with light-colored plaster walls. His designs often had minimal ornamental embellishments, instead of relying on basic, forceful form pairings for esthetic effect. Brunelleschi not only built structures but also devised creative engineering concepts for equipment and machinery that aided construction and helped in other fields like military fortifications and dramatic stage operations.