Why did ancient cities build giant walls around themselves?
Some ancient cities spent years surrounding themselves with stone, brick, or packed earth. That is a huge amount of work on top of everything else a city needed.
Take a guessCuriosity category
How people, choices, and accidents shaped the world we know.
Some ancient cities spent years surrounding themselves with stone, brick, or packed earth. That is a huge amount of work on top of everything else a city needed.
Take a guessA knight in full armor looks ready for battle and also, honestly, ready to make stairs a problem.
Take a guessSome Roman roads ran across the landscape with a confidence you can still see on maps today.
Take a guessToday we put tomatoes on everything. A few centuries ago, plenty of Europeans looked at them and thought, "Absolutely not." How did a perfectly edible fruit get such a terrible reputation?
Take a guessA Viking ship could show up quickly, carry a crew far from home, and leave people wondering how it got there so fast.
Take a guessThe ground feels still. The Sun, Moon, stars, and planets appear to move overhead. That is a powerful first impression.
Take a guessOne machine helped ideas travel farther than the person who wrote them. That is a strange amount of power for ink, metal, and paper.
Take a guessA castle already has walls, gates, and towers. So why put the whole thing up on a hill?
Take a guessAn eye patch is one of the first things people picture when they imagine a pirate. But what was it actually for?
Take a guessA pyramid is a very simple shape until people decide to make one taller than a city street and heavier than belief.
Take a guessA ship leaves shore with a map that gets less certain the farther it goes. Somebody still decided the risk was worth it.
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