Susan liked the stairs, too. They were equal parts impossible and convenient, which seemed to be a mainstay of Gallifreyan architecture. What was more, they were magical, almost to the point of showing off.

"They're very interesting," she remarked to Arthur, as she passed him, stopping to admire them as well. "I wonder what kind of magic they use for them? This whole place seems magic, really, there's a sort of bigger on the inside feel. Very homey."