In Austin, there are several large metal towers with lights. They have an interesting, and possibly sinister, past.

Resources:

https://www.atlasobscura.com/places/austin-moonlight-towers

https://savingplaces.org/stories/austin-moontowers-by-the-numbers#.X6sVlGhKiUk

https://en.wikipedia.org/wiki/Moonlight_towers_(Austin,_Texas)