The present article tackles the subject of the location of the Central Hall in the Egyptian temples of the Ptolemaic period. According to the texts of the temples, the hall in question was situated between the Sanctuary and the Hall of Offerings. A hall with such a strategic position should have been used by the ancient Egyptians to take advantage of its features. Hence, four temples have been investigated: Edfu, Dendera, Philae and Kom Ombo. However, there were earlier theories concerning the location of the Central Hall and these have to be reconsidered. Recently, with the work conducted by Prof. J. F. Quack on the papyri of the Book of the Temple, there has been an enormous amount of information about the description of the ideal temple and its lay out and, in particular, the location of the Central Hall. Since it is a guidebook for the ideal temple, the information implies that it might have been followed or at least taken into consideration during the planning of the temples.