Is There a Prototype Pyramid?

i like the theory that an advanced civilization of aliens came to earth and goosed our ev on for whatever reason. Maybe to prepare it for their own inhabitation later in a million years, when their planet dies. But i do wonder, where are the prototype pyramids? A aliens with that power don't need to seed planets. Oh, i don't know. I don't know what they did. How many of you are like growing vegetables in your back yard? You don’t need to. It would just do things they could because it wants to. Now, i'm going to say good bye to you on you to and i'll talk to you to morrow.