Yes actually. And it's inspired by something HG mentioned before.
When he/she asked if our chancel's moon had ties to the prosaic and/or mythic, and we said no it's cosmetic but still part of the chancel. But that doesn't mean your mansion is similarly restricted.
The mansion on the Moon- Luna, Power of Night, quite frankly has a mansion on the moon. Yes, you heard me correctly. It is a gothic Victorian style thing, although it's neither dark and haunted nor bright and cheery. Somewhere in between really. It does always seem to have well-manicured bushes and trimmed grass and watered flowers though. The void of space doesn't seem to harm the impeccable landscaping of the place. And inside the mansion, there seem to be as many gust rooms as are needed and of course there's a sitting room, kitchen, den, library, greenhouse, swimming pool and jacuzzi, and other amenities too.
- The mansion has any amenities that Luna can reasonably want, and its grounds are by default considered to have gravity, comfortable temperature, clean water, and breathable air for anyone on it unless Luna specifically exempts them from this benefit.
- This is a wondrous Sanctum Anchor with the special ability to exist on any moon anywhere within Creation. This includes other times and the mythic realm, although by default it only exists in the chancel without Luna exerting active will over it. This ability explicitly allows Luna and others in the mansion to travel with the mansion if it shifts to another moon.
One of the top benefits of this, besides being super freaking cool, is that you can use it to go all sorts of places in multiple dimensions within creation and take people with. Maybe with a dose of mp it can even go to really obscure miraculous places like some moon in Hell or something. But another very practical use is that Luna basically always has easy access to the chancel even if she's not on a dark side of the moon as she can hop a ride on her mansion and warp out of wherever she is (and move other people around too via the mansion). And with treasure miracles, you can theoretically have your chancel assist you. Like maybe you need a book from your library or den and you left it there? Or maybe you need some food for someone who's starving...just warp some to your hand from your larder! Basically, this is a sanctum type anchor and I'd love to see one in play and see what a sanctum can all do. Miracle of Treasure has more on sanctums I think.