ThanAt 52m high the O2 might not be the tallest of London’s landmarks but that’s still like standing on top of 12 double decker buses, which is enough to get your heart racing, and that height is more significant than you might realise.

The dome has a circumference of 365m, one for each day of the year, the top of the walkway that runs over the dome is 52m marking the number of weeks in the year and there are 12 masts which represent the 12 months in a year. Yep that’s right, climbing the O2 is pretty much like scrambling over an edifice built by the illuminati or space aliens

According to O2 stats the average climber visiting the O2 burns around 450 calories crossing the dome and has to tackle gradients similar to those in the Tour De France

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