Finnish-American architect Eero Saarinen designed the Gateway Arch monument, completed in St. Louis in 1965 (it opened to the public in 1967). The world's largest arch, the iconic, 632-foot tall structure was built as a monument to westward expansion in the United States. Here, he's shown alongside models of the arch.

Credit: Yale University Library, Manuscripts and Archives; © St. Louis Post-Dispatch  Photo 1 of 25 in Design Icons: 24 Modern Architects and Designers That Have Shaped Our World from Design Icon: Eero Saarinen

Design Icons: 24 Modern Architects and Designers That Have Shaped Our World

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Finnish-American architect Eero Saarinen designed the Gateway Arch monument, completed in St. Louis in 1965 (it opened to the public in 1967). The world's largest arch, the iconic, 632-foot tall structure was built as a monument to westward expansion in the United States. Here, he's shown alongside models of the arch.

Credit: Yale University Library, Manuscripts and Archives; © St. Louis Post-Dispatch