Oct. 28, 1965: The last piece of the Arch is fitted into place. See the stunning construction photos
The Gateway Arch is strikingly simple in design — a sweeping curve of stainless steel rising 630 feet above the ground. Its 142 welded pieces are equilateral triangles, one of nature’s most durable ...
The Gateway Arch in St. Louis — America’s smallest national park and tallest human-built monument — turns 60 on Oct. 28. The Gateway Arch is 75 feet taller than the Washington Monument and over twice ...
If you enjoyed this article, I’d like to ask for your support. Scientific American has served as an advocate for science and industry for 180 years, and right now may be the most critical moment in ...
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