Complex? Modern architecture is complex? Well, we can't duplicate the Pyramids, my friends, and this is like 5 thousand years after they were built. I mean, we can't do it even with the best equipment, people and technology... or so I was told. And I agree with this idea. And it's not just the Pyramids. Stonehenge, the Hanging Gardens of Babylon (no one is 100% sure they even existed, besides a book written by a Greek traveler), the Colossus of Rhodes and many more. We can't create those nowadays, imagine how they did it then. On second thought, don't imagine... p.o