Heidi is a work of children's fiction published in 1881 by Swiss author Johanna Spyri, originally published in two parts as Heidi: her years of wandering and learningand Heidi : How she used what she learned. It 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 book "for children and those who love children" . Heidi is one of the best-selling books ever written and is among the best-known works of Swiss literature.