Would He-Man and the Masters of the Universe make more sense if the show was set in Brooklyn? Because that's where an artist who goes by the moniker Kilroy III made an enormous snow fort modeled after Castle Grayskull. It's large enough to fit three to four adults inside. There are several more pictures at the link.
http://www.carbon-fibre.me/the_ethyr/spotlight-snowmageddon-spawns-castle-grayskull-by-kilroy-iii.html via Geekologie | Artist's Website | Photo: Carbon-Fibre Media
@Rumson. We had so many visitors taking pictures, I don't think the kids had an opportunity to sneak inside. If they did, we didn't know about it.
The church across the street did not complain. The nuns actually waved at us while we were constructing it. I think most of our neighbors were pleased.
Thanks to Neatorama for posting about it. And thanks for the feedback. Glad you enjoyed it!