
So the Tube, right? It was invented in 1863 and is the world’s oldest underground transportation system. It covers 400km and has 270 stations, only one of which has a name that shares no letters with the word ‘mackerel’ (St John’s Wood), another of which has six – count ’em – consecutive consonants in its name (Knightsbridge), and only two of which contain all five vowels (South Ealing, Mansion House). The shortest escalator is at Stratford and the longest is at Angel. Only 45% of the Underground is underground.
The Circle Line opened in 1884, but is not the only ‘Circle Line’ that the Tube has had. In the late nineteenth and early twentieth centuries, there was a ‘Middle Circle’ (essentially the Hammersmith & City Line), an ‘Outer Circle’ (essentially the Silverlink/Overground line) and a ‘Super Outer Circle’ (St Pancras to Earl’s Court via Cricklewood and Acton – doesn’t sound very super to me). None of these non-Circle-Line Circle Lines was actually a circle.

A number of stations have closed down over the years, including Down Street, between Green Park and Hyde Park Corner; City Road, between Angel and Old Street; British Museum, in the obvious location; and a rather brilliant-sounding place called Brill, unfortunately located ‘beyond Amersham’.
But enough of all that. Here’s a video of a bloke skiing down Europe’s longest escalator, at Angel.