Here is a welcome sign in Ottawa, ON, Canada, that says AWATTO.
The monochrome OTTAWA sign is super-boring compared to the colourful sign in Mérida, Mexico, where my kids my engineer/mathematician/computer scientist son François, my professional artist daughter Véronique and my geological engineer/exploration geologist daughter Évelyne have all visited, but not me. It is not ADIREM.
Potential Discovery or Invention
Here is another welcome sign in Ottawa, ON, Canada, that says OT AWA.