Backrooms locations?

Redditors I need your help! My autistic 8 year old’s special interest has been the backrooms for a couple years now. Now that this new A24 movie is coming out his excitement has ramped up. Everyday he asks me if we can find a real life backrooms-feel office building. I have scoured the internet but nothing looks quite similar to this feel that is publicly accessible. Does anyone work somewhere that has empty office space that resembles this in any way? Probably somewhere in need of new carpet and wallpaper?

Thank you!