Hospital of the Transfiguration (in Polish: Szpital Przemienienia ) is a book by Polish writer Stanisław Lem. It tells the story of a young doctor, Stefan Trzyniecki, who after graduation starts to work in a psychiatric hospital. The story takes place during the Nazi occupation of Poland in the Second World War. The book is the first of a trilogy entitled Time Not Lost, and the only one of the three translated into English. The book was adapted as a film of the same name (Hospital of the Transfiguration) in 1979, directed by Edward Żebrowski. Hospital of the Transfiguration is also available in paperback under ISBN 0-15-642176-3 (Mariner Books, 1991). Here "transfiguration" refers to the Transfiguration of Jesus and accordingly to the Church of the Transfiguration.