Three sites, one idea
We start at Giza for the Great Pyramid and the Sphinx, then drive south to Saqqara for the Step Pyramid of Djoser, the first large stone building anyone attempted. Memphis next, for the fallen colossus of Ramses II lying in its shed. We finish at Dahshur, where the Bent Pyramid shows the angle being corrected halfway up and the Red Pyramid shows them getting it right, and where you can usually walk down into the chamber alone.