Slightly off-topic, but ...
It obviously can't be a)
I always look for an archive when I want to find somewhere to eat. They must have been desperate for everyone to get that right.
I work for a firm which has no canteen. A lot of institutions here have the rooms for canteens, but they are then leased to caterers. These caterers are naturally interested in making a profit, so they welcome "outside" customers.
In the past 30 years I and my colleagues have eaten in the canteens of
- the College of Economics,
- the Inland Revenue Services,
- the Universitary Library,
- an Insurance "watch-dog" organisation,
- etc.
No archives, but that is probably only because there are none in the immediate area.

Bob