On a recent trip to Wales, I visited both Pembroke and Caerphilly castles. One of them had a tower room with a strange deep window seat. It had a deep alcove where two people could sit on the left side of the window without being seen from the room. I thought I might use this in my novel. BUT I forget now whether it was in Pembroke or Caerphilly castle, and have no idea what it is called, or what its use actually was (probably just a private nook?) Does anyone anything about this sort of secret castle seat?