I can't find any posting on this in our forums, but last year a number of European AFOLs built a huge Europmap display. Spearheaded by Tobias Reichling and Bruno Kurth, five builders made a 15 square meter map of Europe to bring to fan events, and then attendees could cover the map with microscale versions of various European landmarks. Of course, many of these are Castle related:
One such, and in honor of the day, is Jojo's Saint Patrick's Cathedral from Dublin.
Happy Saint Patick's Day, everyone. And be sure to see the Euromap project to see lots of other great microscale MOCs.