Can it be said it has gone viral if it not really internet based? In a way it is.
To my regret, although we visited Alnwick in England, we did not visit Alnwick Castle. It was an expensive admission fee and it was raining. After seeing a few sights, and cruising the local market, we sheltered in a porch where we had the delicious experience of seeing a market tarp fill with water and then caught by the wind, dump its contents over some quite obnoxious American tourists. We adjourned to the pub where I disappointed R's brother in law's sister's alcoholic husband when I refused the triple Scotch he had bought me. I had told him I don't drink whisky during the day. Night time is another matter.
Alnwick is a very nice English town. Royalty used to stop off at Alnwick Castle as they journeyed by train from London to Balmoral I suppose. Consequently, the station was rather grand too.
Within the old railway station in Alnwick is a bookshop called Barter Books. The owners discovered a poster from World War Two among their book purchases. It says, Keep Calm and Carry On. The idea was for the government to use such a poster, and the slogan generally, if things became absolutely much worse in England during the war than they actually did.
Does that ring a bell for us in Australia post 9/11? Be Alert, Not Alarmed? I hope you Aussies kept your Be Alert, Not Alarmed fridge magnet. It could be a valuable memento one day.