Radio City Tower, originally called St John's Beacon, was planned to have a 21.3 metre tall mast on the top of it but this was removed from the design whilst the structure was under construction.
The Beacon originally had a revolving restaurant at the top along with an observation level but these were closed in 1984 following the enforcement of fire regulations which ruled that a lack of a staircase made the building unsuitable for this. Unlike the BT Tower in London no amendment was passed by parliament exempting it from the law.
The building was completely renovated in 2000 with a new fireproof staircase added whilst the observation level was turned into a second floor with offices and a conference centre for the occupier to use. The weight of this has meant that the original rotating floor can no longer turn.
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