While in pre-production for the first episode, Woods worked with Highclere's manager, Lady Carnarvon, to sort out which scenes could be filmed on location, and which ones had to be shot separately on a sound stage. "I said, 'We're going to do a luggage room. Have you got one? Because I think I might need to build one,'" said Woods. "She said, 'Come and look at mine!' So we went upstairs."
Woods was astonished by what he saw. "It's a stunningly beautiful room, for what effectively keeps luggage," he said. "Beautifully carved doors and everything." But after the production went through the effort to get a film crew up into the room, Woods realized it was likely they would never film there again.
"It's structurally unsafe," he said. "There's liability problems. … There's about three loads of stairs. We couldn't go up there [now]. There's weight issues about the dolly and stuff. That [tower] was added later. Apparently the earl thought he needed a bigger tower, so they had to add it later."