Editing St Paul's Cathedral (section)

===Geometric Staircase===
The [[Geometric Staircase]], a helical cantilevered staircase rising 50 feet with 88 stone stairs, designed by Christopher Wren, was built by [[William Kempster (mason)|William Kempster]] in the southwest tower of the cathedral and completed in 1710.<ref>{{cite web| url=https://lookup.london/behind-the-scenes-st-pauls-cathedral-triforium/ | title=Behind the Scenes at St Paul's Cathedral | website=Look Up London | date=14 January 2020 | access-date=5 March 2025 }}</ref> The steps are only embedded about 150mm into the walls since they are mainly supported by the steps below.<ref>{{cite web| url=https://livinglondonhistory.com/the-hidden-rooms-of-st-pauls-cathedral/ | title=The Hidden Rooms Of St Paul's Cathedral | website=livinglondonhistory.com | date=15 May 2024 | access-date=5 March 2025 }}</ref> The staircase has been featured in several major films.<ref>{{cite web| url=https://exploring-london.com/2022/02/16/10-historic-stairways-in-london-6-the-geometric-staircase-st-pauls-cathedral/ | title=10 historic stairways in London – 6. The Geometric Staircase, St Paul's Cathedral… | website=Exploring London | date=16 February 2022 | access-date=5 March 2025 }}</ref>