In this city, one of Rich
In this city, one of Richard Serra's many weathering steel spirals can be found in the courtyard of a Tadao Ando-designed museum. Gyo Obata started this city's HOK architectural firm, which added a new wing to this city's namesake art museum, originally designed by Cass Gilbert. In this home city of the Pulitzer Arts Foundation and of the Jefferson National Expansion Memorial, a brewer hired Dankmar Adler and Louis Sullivan to design a red-brick skyscraper, the Wainwright Building. This city is home to a flattened catenary-shaped monument designed by Eero Saarinen. For 10 points, name this city whose Mississippi waterfront includes the Gateway Arch.