FF-Reunion summarized an interview (from Dengeki?) with Isamu Kamikokuryou, Final Fantasy XIII’s art director, where he talks about some of the deleted areas.
Nora, Snow’s hero squad, at one time had a secret base within Lebreau’s shop. A full space was made for Lightning’s home, which included a park. One of the game’s amusement parks also had a zoo too.
These areas were running in an unreleased build of Final Fantasy XIII, but were cut from the final version due to considerations about game balance and game volume. Kamikokuryou says there is enough lost Final Fantasy XIII content was removed to make another title.