Located at the base of Eero Saarinen's iconic Arch, this LEED Gold, $108.9-million project renovated and expanded the half-century-old subterranean museum and visitor center and added a new west entrance. The largest public-private partnership investment ever in a national park, the project team sought to expand and improve the visitor's center and connect the park via a walking path to St. Louis' Old Courthouse, which had been cut off by a highway. It also had to be built without shutting down the Arch, which gets nearly 3 million visitors a year.
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