Movies You Haven't Seen But Should: Nausicaä of the Valley of the Wind

Wiki:

Nausicaä of the Valley of the Wind (風の谷のナウシカ, Kaze no Tani no Naushika) is a 1984 post-apocalyptic Japanese animated film, written and directed by Hayao Miyazaki, based on his manga of the same name. The film has environmentalist undertones and was presented by the World Wide Fund for Nature when it was released in 1984. While created before Studio Ghibli was founded, the film is considered to be the beginning of the studio, and is often included as part of the Studio's works, including the Studio Ghibli Collection DVDs. Among its numerous awards, it won the Animage Anime Grand Prix prize in 1984.