Finnish-American architect Eero Saarinen originally studied sculpture, and this influence is apparent in his design of the soaring Saint Louis Gateway Arch.
Plated with stainless steel, the arch is an inverted catenary curve that rises 630 feet high and spans 630 feet from end to end. A passenger train climbs the wall of the arch to an observation deck, which provides panoramic views to the east and west.
Designed for storm-readiness, the arch was made to sway in high winds. Deep concrete foundations, sinking 60 feet below the ground, stabilizes the enormous arch.
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