Some of the Pyramids were the largest structures in human history until the industrial age. They're definitely worthy of being considered their own category.

I don’t think it’s very narrow to note that the Pyramid of the Sun was built with stones that a single man can carry on his own. It’s impressive at half the size of the largest Egyptian pyramids, but it doesn’t really raise the question of how. They just got a lot of people to carry a lot of stones, maybe using carts or something.

The Egyptian pyramids easily make one wonder “How did people move such large stones?” I could never move those with strength alone. Some form of technology / leverage / something was needed for the Egyptian pyramids which wasn’t needed for the American ones.

https://upload.wikimedia.org/wikipedia/commons/a/ac/Comparis...