Come with us behind the scenes to the core of the CN Tower! The 447 m (1,465 ft) concrete shaft of the Tower is made up of a hexagonal core (the “hex”) with three curved support arms. There is a continuous ladder system from the bottom of the hex to the observation levels. All our main services run up the hex including hydro, water, sewer, fire alarm and lightning protection, as well as various fibre optic cables. In 1979, a 17-year-old from Toronto set a world record by dropping an egg from 341