I think I"ve mentioned this previously, but my daughter thinks the church down the block from the library is a castle. She really has no other context for it, and it is a rather fancy looking building (which feels surprising given that they're Baptist, but whatever).
When she was younger, she'd talk about how the wooden robot and the log princess lived there, though lately she's gotten the idea that royals are a thing that "lived a long time ago, like the dinosaurs."
Yesterday, she *really* wanted to see inside the "castle". My initial, and super careless, response was that we weren't welcome there, and I kind of saved it by explaining that someone lives there, and we can't just go inside someone else's home. Except that then she was like "what if we knocked first?" Oh.