"Sauna" is an exciting book written by the famous Finnish writer Finn-Ole Saari. This book depicts a story of deep spirituality and physical recovery through the ancient Finnish sauna tradition. The main character, leaving the city bustle, goes to a remote lake, where he finds an ancient sauna that hides many secrets. The author successfully combines elements of mysticism, nature and human feelings, revealing important life values to the reader. The book "Sauna" encourages you to think about the true essence of a person and the need to turn to traditions and roots for spiritual growth.