Here's one I generated and an image from the photographer. Prompt was Charleston SC covered in baked beans lol

Personally speaking, I've generated some stupid images like different cities covered in baked beans and have had crude watermarks generate with them where they were decipherable enough that I could find some of the source images used to train the ai. When it comes to photo realistic image generation, if all the ai does is mildly tweak the watermark then it's not too hard to trace back.