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Why London Tube Stair Signs Say “15 Floors”

Geoff Marshall · Explainer · 14 min · 2018 · YouTube title: All Tube Stations Have Fifteen Floors
Why it's here

Cited as the explanation for the oddly inaccurate tube staircase signs, and as an example of Marshall's station-detail videos.

What it covers

Geoff Marshall explains a running gag about London Underground stair signs claiming that the climb equals 15 floors, regardless of how many steps there actually are.