"Castle not built with children in mind?" she says with a small smile. "We're having the same issue on Atlantis. I'm all for free range children, but it's nice to give them something structured, too, so they can climb and play without putting themselves in extreme danger."

A castle does sound like a rather romantic place to grow up. "Do you like where you live otherwise? I grew up in a three bedroom house. I don't know what I'd do with all that space."