The category "Spiritualismus" in Czech Wikipedia is a collection of articles related to spiritualism. Spiritualism is a philosophical belief system that involves communication with the spirit world through mediums or other supernatural means. The category includes articles about famous spiritualists, their works, and their impact on society. It also covers different aspects of spiritualism, such as its history, teachings, practices, and controversies. Additionally, the category contains articles about related topics such as séances, ghost hunting, paranormal phenomena, and spiritualist organizations. Overall, the category provides a comprehensive overview of spiritualism in the Czech language.