#3: The Step Pyramid of Djoser
At Saqqara, the Step Pyramid of Djoser looks like architecture learning to climb. Built for Pharaoh Djoser and associated with the architect Imhotep, it is among the earliest great monumental stone structures in Egypt. Before the smooth-sided pyramids of Giza, there was this stacked, experimental giant. It feels both ancient and inventive, like the moment Egyptian builders realized stone could stop being practical and start becoming immortal.

