photo: Carol M. Highsmith
The Gateway Arch was legendary architect Eero Saarinen’s first major commission. Developed with the assistance of structural engineer Hannskarl Bandel, the Arch is constructed of a stainless steel skin covering reinforced concrete nearer the base and carbon steel and rebar higher up. The arch won the AIA’s Twenty-five Year Award in 1990. Saarinen was awarded the Gold Medal posthumously in 1962.