The capital of Egypt in the Archaic Period and Old Kingdom (c 2575-c. 2130 BC), and thereafter one of the most important cities of the Near East. Located in Lower Egypt, it stood near the key point where the Nile begins to divide its waters at the head of the delta, 15 miles south of Cairo. The only surviving remains are the cemeteries west of the city, most notably the pyramids and Great Sphinx of Giza. The main pyramid fields are: Abu Ruwaysh, Giza, Zawayet el-Aryan, Abu Sir, Saqqarah (Saqqara), and Dahshur. It is said to have been founded by the 1st Dynasty ruler Menes c 2925 BC and was the seat of the creator god Ptah. During the New Kingdom (1539-1075), Memphis probably functioned as the second, or northern, capital of Egypt. Despite the rise of the god Amon of Thebes, Ptah remained one of the principal gods of the pantheon. The Great Temple was added to or rebuilt by virtually every king of the 18th dynasty. Chapels were constructed by Thutmose I and Thutmose IV and by Amenhotep III. Amenhotep III's son, the religious reformer Akhenaton, built a temple to his god, Aton, in Memphis. A number of handsome private tombs dating from this period in the Memphite necropolis testify to the existence of a sizable court. In 332 BC, Alexander the Great used Memphis as his headquarters while making plans for his new city of Alexandria. From the Fifth Dynasty onwards there was a very marked reduction in the size of the royal tombs, together with the use of materials and techniques which involved a lesser expenditure of effort and resources in their construction. By the First Intermediate period, the construction of monumental tombs seems to have stopped.