OK, I posted a "Where in Walt Disney World" picture a few days ago, and no one posted an answer. I will admit, though, that this is a little bit "obscure", and even people who walk past it might not notice it.
The picture is a decorative wall in the lobby of Bay Lake Tower. Here is another picture of the lobby, and you can see the wall on the far right of the picture.
I thought the lighting and the basket weave-look was gorgeous, so that's why I snapped a picture (actually, several pictures).