A reply of bad news I'm afraid.
I myself asked this question a few months ago, and it sounds like the article you are looking for is the same one that I was looking for. I remember it being a fantastic article, the finished board looked amazing and they had pictures of it layed out with the tiles in different slots.
IIRC there were around 9 1x1 tiles which a mixture of buildings, roads etc
Unfortunately,
GW removed all those articles from their website a while ago when they re-did their webpage

I did find a link to a website that had archived the old website with all the articles on, however it didn't archive the pictures so still no luck. I have spent a fair few hours searching and have no luck.
I hope that someone else sees this thread and can help out as I've tried to no avail.
Sorry