The Great Pyramids of Giza

The Great Pyramids of Giza are one of the seven ancient wonders of the world. The reason is not because it's a million blocks stacked on top of each other in a perfect pyramid shape with no glue attaching them. It was the air pressure, and it's a very simple method that has been redone today to check it out. I do understand why people would go there and say, it must be aliens, humans couldn't have done this.