The story it tells is a glorious one: how a century ago a determined band of campaigners trailed door to door persuading a third of all Welsh women to sign a petition calling for world peace and delivered it to the US. But the idea of a new exhibition at the National Library of Wales is not just to remember an historical event but, in these troubled times, to inspire the belief that change is possible.
"It's been brilliant to see so many people stop, stare, and realise they're literally standing on history. The water gate has always been there, just beneath people's feet, so creating a piece of art that opens up the ground felt like the perfect way to reveal something that was hidden in plain sight all along."