Unfortunately, it didn't go off quite as planned. After two days of steady rain, the soaked wood just didn't want to get going.
The center turret, which you can see here, is about all that ended up burning. There was some kind of hidden shape or message inside the mansion that was supposed to be revealed, but I have no idea what it was supposed to be. After the 30,000 people who had turned out for it started leaving, they cued the fireworks, which I mostly missed because I'd retired to a bar for some beer and fried pickles.
If their spectacle didn't go off as well as one might hope, the spectacle that I put on was fairly successful.