OK, got it. Ocean Park in Hong Kong. Haven't been to that part of HK either. Things about the Disneyland guess didn't quite seem right, looking at Google maps, but I assumed it was just something odd about the angle of the picture that I couldn't quite work out.
Do other people agree that "Change Just One Thing" has become a bit stale? It was very fun for a while, but we don't seem to have found any interesting way to develop the game.