What human-made structures do you see from 100m?

The Great Pyramids of Giza pyramids

Explanation: Those shadows, and the small speck right below them, are actually some of the most mind-blowing constructions ever built by humans. They are three of the most well-known ancient Egyptian pyramids: the Pyramids of Giza. The largest of the three is nearly 500 feet tall, but from space it just looks like a tiny smudge in the Egyptian desert.

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