London had a spiral escalator in 1906, sadly not captured on film https://www.ltmuseum.co.uk/blog/spiral-escalator-engineering-wonder-ahead-its-time https://ww

London had a spiral escalator in 1906, sadly not captured on film https://www.ltmuseum.co.uk/blog/spiral-escalator-engineering-wonder-ahead-its-time https://www.ltmuseum.co.uk/blog/spiral-escalator-engineering...