This image of a bridge in the Japanese garden in Hilo is not badly out of alignment. Selecting the rightmost red post on the bridge structure, and running File -> Automate -> Upright detects a tilt of 0.3 degrees.



Correcting the tilt by clicking OK yields, after cropping, this image.

After the rotation we checked the verticality of one of the center posts, and it was 0.0 degrees. Can you tell the difference in the image after the small error is corrected? Even though the error was small, we think it looks better after correction.