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The Gateway Arch, St. Louis, Missouri,Usa
St. Louis Missouri is the American 'Gateway to the West'. The Gateway Arch in St. Louis symbolizes the many wagon trains that left Missouri for Oregon and California.
St. Louis. They have an arch there to commemorate that historical fact.
If you meant The Gateway Arch in St. Louis, Missouri, then the first 300 feet of each wall consists of a stainless steel skin covering a sandwich of two carbon steel walls with reinforced concrete in the middle, and carbon steel and re-bar starting at 300 feet, going up to the peak.
gateway to the sun