The first hall I attended as a study was built in the 1960s. It was basically an orange brick box with aluminium framed windows. There was no air-conditioning and it heated up like an oven in summer. The lime green carpet and false wood grain panelling on the walls didn't help the ambience either. And despite the congo's best efforts, the parking lot was forever covered in weeds because it was basically just gravel.
Finally the congo decided that this KH didn't really reflect well "Jehovah's people" anymore. This was because the suburb around the hall had become quite prestigious with large surrounding houses. It looked like a soup kitchen for the homeless in comparison. Clearly the Borg was embarrassed. So they sold it and shared another hall instead.
So have you seen any crumbling halls? Ones that have foyers like airport terminals? Or nightclub style lighting?