Pyramidology (or pyramidism)[1] refers to various religious or pseudoscientific speculations regarding pyramids, most often the Giza pyramid complex and the Great Pyramid of Giza in Egypt.[2][3] Some "pyramidologists" also concern themselves with the monumental structures of pre-Columbian America (such as Teotihuacan, the Mesoamerican Maya civilization, and the Inca of the South American Andes), and the temples of Southeast Asia.