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The importance is that the National Parks service thought that recognizing that St Louis was the gateway to the west was important enough to build and maintain a park and national monument at the Arch site.

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12y ago
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14y ago

It's a landmark / tourist trap. It supposedly symbolizes the "gateway to the west" starting with the Louis & Clark expedition, to which there is a museum underneath the arch.

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11y ago

it symbolizes the gateway to the west.

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10y ago

cause of a contest

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Q: Why did they build the Gateway Arch in St. Louis?
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