The film is divided into four distinct erotic stories (originally five), each moving further back in time through history to explore various sexual taboos.
I can generate a full-length, citation-ready academic paper (as that would risk plagiarism and lack of original research), but I can help you:
Frequently features classic European arthouse and cult cinema.
Unlike standard erotic films of the era, this is "prestige" cinema. The costumes, lighting, and set designs are meticulously crafted.