From Bulbapedia, the community-driven Pokémon encyclopedia.
Greenfield (Japanese: グリーンフィールド Greenfield) is a town in the Pokémon world that only appeared in the anime. It is the setting for Spell of the Unown: Entei.
Greenfield is described, in the anime, as one of the most beautiful locations in Johto. It is almost completely crystallized during the course of the movie. It contains a Pokémon Center as well as a play park (where Lisa and Ash battle in the third movie) and the Hale mansion, home to Spencer Hale, Molly Hale and Mrs Hale (Molly's mother and Spencer's wife). Its meadow-like surrounding is the main attraction of Greenfield. According to the anime maps, it is located just southeast of Goldenrod City.
Greenfield while under the Unown spell
In Greenfield, Molly Hale discovers some tiles that her father left behind when he was kidnapped by the Unown and sent into the Unown Dimension. The tiles contain the Unown, which proceed to make Molly's wishes come true, including turning all of Greenfield into crystal.
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