Heidi's Years of Wandering and Learning (German: Heidis Lehr- und Wanderjahre), usually abbreviated Heidi, is a novel about the events in the life of a young girl in her grandfather's care, in the Swiss Alps. It was written as a children's book in 1880 by Swiss author Johanna Spyri. Two sequels, Heidi Grows Up and Heidi's Children, were not written by Spyri but by her English translator, Charles Tritten.
The Heidi books are among the best known works of Swiss literature.
Adelheid alias Heidi is an orphaned girl initially raised by her aunt Dete in Mayenfeld, Switzerland. In order to get a job in Frankfurt, Dete brings 6-year-old Heidi to her grandfather, who has been at odds with the villagers for years and lives in seclusion on the alm. This has earned him the nickname Alm-Öhi ("Alp-grandfather" in the Graubünden dialect). He at first resents Heidi's arrival, but the girl manages to penetrate his harsh exterior and subsequently has a delightful stay with him and her best friend, young Peter the goat-herd.