There is an ancient invention. Still used in some parts of the world today. That allows people to see through walls.

There is an ancient invention. Still used in some parts of the world today. That allows people to see through walls.

Other Difficult Riddles

What can go through glass without breaking it?

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What turns from red to black as soon as it touches water?

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What has a neck and no head, two arms but no hands?

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Alive without breath, As cold as death, Clad in mail never clinking, Never thirsty, ever drinking

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What liquid can contain the soul?

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Riddle of the Day

Jul 20, 2026

Before Google, we actually had to physically look things up in this building full of knowledge.

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