A few years ago in 2015, I wrote on this blog about the changing of the carpet design in the Portland Oregon International Airport.
PDX Carpet Designs in AutoCAD DWG

The new design was confusing and not iconic and fun like the classic design. Wikipedia on the PDX carpet design

Well, roll forward to 2024 and they have finally heard my complaint, or the many others and are now returning to installing the old classic design carpet.The classic design was based on the airport’s North and South runways as seen by air traffic controllers at night in a nerdy artistic way.

PDX Carpet story on the 99% Invisible Podcast published on Feb 24, 2014 by Roman Mars. Episode 154: PDX Carpet http://99percentinvisible.org/episode/pdx-carpet/

View and download the PDX Carpet Design DWG file.
https://www.btl-blog.com/PDX%20Carpet.dwg