"Heidis Lehr- und Wanderjahre" by Johanna Spyri is a children's novel published in 1880. Five-year-old Heidi is sent to live with her reclusive grandfather in the Swiss Alps, where she finds joy in the mountains and befriends a young goatherd and his blind grandmother. When her aunt forces her to Frankfurt as companion to a wealthy invalid girl, Heidi's homesickness grows unbearable. This beloved tale follows a spirited orphan caught between two worlds—the freedom of Alpine peaks and the constraints of city life.