Beaux-Arts architecture looked back to classical tradition, using symmetry, sculptural ornament, monumental entrances, and academic composition to create buildings that felt formal and civic.

Art Deco turned toward the modern age, with geometric ornament, vertical lines, stepped setbacks, and a streamlined sense of progress — especially in skyscraper design.

One speaks the language of classical monumentality; the other captures the speed and ambition of the 20th century.

from 

Architecture Hub

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What's the relevance to TIDE? Hirsch lived in the era of Beaux Art, which means beautiful art. It was a more moral and noble time. The more we replicate it the better, and the better TIDE feels.