The Old Mill Waterwheel at Berry College in Rome, Georgia ----- Alaney's stone house/castle/cottage has to have a waterwheel because as she's practicing she can make it run again! (I'll have to look up how water wheels work.
Diamond Head, Oahu, Hawaii is the name of a volcanic tuff cone on the Hawaiian island of O'ahu. Its English name was given by British sailors in the century, who mistook calcite crystals on the adjacent beach for diamonds. Hawaii is the state.