Building upwards may also have spiritual significance as the structures bring one closer to the heavens, even so far as to offering the soul a pathway to follow into the afterlife. One might look at the pyramids in this way and think, what if the true purpose of a pyramid was not only to offer the soul a channel of passage, but what if literally they're a stairway to the heavens, and during a time science understands people were not flying. One of the greatest curiosities back then, without flight, had to be discovering what resides in the space above Earth. Perhaps building one pyramid was not enough to reach the edge, so another was built taller, and then another. It's a great motivation to thousands upon thousands of pyramid builders around the world, to say they are helping to build a pathway into the heavens, to touch the sun and the moon. Looking up into the sky is deceiving and even with modern technology it's difficult to truly comprehend those 248.514 miles between the Earth's surface and space, let alone trying to reach the moon, sun, and stars. Giza is 0.0863706 miles tall, meaning the Egyptians needed to build a structure 2,877 times the size; then only to discover a seemingly endless vacuum of space. Maybe structures around the world first met with primitive attempts to travel into the heavens, and without flight capability this sounds quite plausible, though perhaps in time we may discover an alternate means for traversing the universe directly from Earth's surface.