When were spiral staircases invented?

Stone spiral staircase - photo by revolution cycle - CC-BYWe will never know exactly when and where the first spiral staircase was built. There are “winding stairs” in Solomon’s Temple in the Bible suggesting spiral stairs were known around 3000 years ago. As for actual archaeological remains, the oldest are thought to be the remnants of a 2500-year-old spiral staircase at a Greek temple [more…]

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