If anyone thinks of an image that speaks "Egypt", odds are no-brained that the number-one choice would be the mighty pyramids, the grand resting places of the people's man-gods, or pharaohs.
The oldest and largest of Egypt's surviving pyramids was Giza. It would have stood 455 feet tall and 756 feet at the base, covering a volume of at least 90 million cubic feet. The map is as follows:
If it weren't for materialistic impracticality, the Japanese today would have been busy building the next largest pyramid--the Shimizu Mega-City Pyramid, which was planned to be built over Tokyo Bay. The plan was 6575 feet tall and an area of eight square miles.
The people of ancient Egypt always considered their pharaohs to be living gods, so would it be possible for an ancient pyramid to be as big as Shimizu to put emphasis on that belief? Even with the interior diagram presented here instead of the arcological skeleton that the Japanese were planning, would it be practical to even try?