Seattle
The platform-software capital.
Kernel
Seattle is what happens when one founder (Gates, 1975) and one extraordinary distribution decision (Microsoft, 1981, on the IBM PC) compound for forty years. Add Amazon (1994), which industrialized the commercial internet, and the cloud business (AWS, 2006) that became the substrate of the next two decades. Bellevue and Redmond are not glamorous; they are the cities that quietly run the most software-by-revenue of any region on earth.
What it gave the world
MS-DOS and Windows as the default operating layer of a generation of business computing. Office. The Xbox. .NET. Azure. Amazon's logistics network. AWS as the substrate cloud. Kindle. Whole Foods's integration into Amazon. The cultural template of the founder-CEO who remains personally operational for decades (Gates, Bezos, Nadella).