The Secret Garden by Frances Hodgson Burnett

Since 1911, the The Secret Garden has charmed readers of successive generations. Now another generation can delight in the story of Mary Lennox--an unattractive, unloved little girl, sent to live at Misselthwaite Manor on the Yorkshire Moors after her parents' death. There, along with her invalid cousin Colin, she is drawn into a magical world of the secret garden--where Mary and Colin are transformed by the beauty they find there.