I work in a building close to here. We seem to have a campus around here due to lack of space. Right now, I believe we take up space in 5 different buildings. I currently work down the road but will be moving to the main building sometime in 2018.
Please be stealthy as there are lots of muggles around this area. Hence the difficulty level. No muggles, no problem. If you found this one before, you won't have any problem.