space in the rooms below. On a granite doorway leading into her tomb, Khentkaus I is given titles that may be read either as mother of two kings of upper and lower Egypt, as mother of the king of upper and lower Egypt and king of upper and lower Egypt, or, as one scholar reads it, king of upper and lower Egypt and mother of two kings of upper and lower Egypt. Furthermore, her depiction on this doorway also gives her the full trappings of kingship, including the false beard of the king. This depiction and the title given have led some Egyptologists to suggest that she reigned as king near the end of the fourth dynasty. Her tomb was finished in a characteristic niche style of architecture, however, the niches were later filled in with a smooth casing of limestone. Age of the Pyramids The Age of the Pyramids refers to the fact that the Fourth Dynasty was the time when most of the well-known pyramids were built, which include those at Giza. King Sneferu was the first king to express an interest in funerary rites and tombs, which led him to the planning of the largest pyramid at Egypt. His first pyramids were called the Bent Pyramid and Red Pyramid. The "Age of the Pyramids" was not just about the building of large and easily recognizable structures, but also a change in funerary practices and rituals. This includes the burying of elites in large structures and the use of extensive mummification. Religious changes The Fourth Dynasty is where we truly see a shift in religious practices where worship of the Sun was commonplace. The Cult of Ra grew in size, going back to the fact that Djedef's tomb was built closer to the center of worship in what the Ancient Greeks called Heliopolis. It was a delta city near contemporary Cairo that had been occupied since the predynastic times, whose ancient Egyptian name was I͗wnw or Iunu and meant the pillars. During the era when centralization of the nation's material, organic, and human resources began to develop, a relationship of the king to the deities became unchallenged and kings began carving their names into statues and monuments that previously had been reserved for deities. This speaks to a type of god complex on part of the kings. Khafre's famous statue, where a falcon was incorporated into his headgear,