Found it. It wasn't the Zero room, it was the Swimming Pool. From the Doctor's Wife: ----- RORY: Oh, what is happening? DOCTOR: We're leaving the universe. AMY: How can you leave the universe? DOCTOR: With enormous difficulty. Right now I'm burning up Tardis rooms to give us some welly. Goodbye, swimming pool. Goodbye, scullery. Sayonara, squash court seven. (Whoosh, thump, crash, then all is still and silent.) AMY: Okay, okay. Where are we? DOCTOR: Outside the universe, where we've never, ever been.
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Date: 2022-01-30 02:33 am (UTC)-----
RORY: Oh, what is happening?
DOCTOR: We're leaving the universe.
AMY: How can you leave the universe?
DOCTOR: With enormous difficulty. Right now I'm burning up Tardis rooms to give us some welly. Goodbye, swimming pool. Goodbye, scullery. Sayonara, squash court seven.
(Whoosh, thump, crash, then all is still and silent.)
AMY: Okay, okay. Where are we?
DOCTOR: Outside the universe, where we've never, ever been.