I have previously pointed out similarities between Giza and the Indian mounds along the Mississippi river (which floods just like the Nile)

"Crystal River is a state archaeological site located north of Tampa on the west coast of Florida and was one of the longest continuously occupied sites in Florida (200 B.C. - 1400 A.D.). There are three main earthen mounds. Two are rectangular pyramidal temple mounds with ramps and flat tops for buildings. The center mound is round with a ring mound around it (mostly destroyed); hundreds of burials and artifacts have been excavated from it."

Similarities with Giza:

"Both sites are situated along a river, both are approximately around 30 degrees north latitude and both were known astrological observation sites. The triangle formed by the layout of both sites pyramids and the stars of Orion have identical angles and proportional sides "