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In Part III of the novel, the dream of the Glass Castle is destroyed. Brian and Lori begin digging a foundation for the home Rex had designed for his family, but the foundation instead becomes a ditch for garbage that the family cannot afford to have picked up. The idea and dream of the Glass Castle as a physical structure is also destroyed when this happens. Jeannette realizes that it will never be built. Yet, the Glass Castle as a symbol and an abstract hope lives on.