"In that day shall there be an altar to the Lord in the midst of the land of the Egypt, and a pillar at the border thereof to the Lord."

Isaiah says here that an "altar" and a "pillar" (the Hebrew can mean a "monument") will be in the middle ("midst') and at the same time "at the border" of Egypt.  This would seem to be a conundrum.  How can something be both in the middle of something, and yet also at its border? The drawing to the upper right shows how the Great Pyramid is in the middle of Egypt.  Giza, where the Great Pyramid stands, is in the center of the Nile delta. Yet Giza itself means "border."!  The ancient borders of Egypt were where the Nile flooded to.  Giza is one of those borders.  So the Great Pyramid seems to fit the prophecy of Isaiah.  It is in the middle, yet at the same time the border of Egypt.

Perhaps more interesting is the fact the the Great Pyramid lies in the center of the world's land surface.  The line of meridian gong through the Great Pyramid covers more land than any other North-South meridian, and the East-West longitudinal stripe through Giza touches more land than any other.  The Great Pyramid is in the center of the earth's land surface! (See drawing at right...)