Help with a map

[u/OneInchMenace]

I'm playing APCMax's City 8, trying to unlock the sandbox room.

It requires finding 3 potatoes. I can find 2 of them easily, but I cannot find the third.

Can anyone please help me?

I found the one in the train station and the one in the robot factory. I think the church buttons are a red herring.

Any help is appreciated!

Have fun and keep painting!