The obvious choice would be Antarctica, because that's where penguins live.

Possibly Limekiln St. (perhaps not).
I've got one - and perhaps someone can help me out with it . I'm almost certain it has something to do with the Dover railways. This plate is now fixed onto a modern utility building but it's original location was just a few yards from it's current position.
My question (apart from where is it) is .... can anyone tell me what the AMFS was? - because I don't know.