Alexandra Palace
From Tardis Wiki, the free Doctor Who reference
Situated in Muswell Hill, North London, Alexandra Palace served as headquarters for BBC Television in the 1950s. In 1953, the Wire planned to turn Alexandra Palace's antenna tower from a transmitter into a receiver, thus stealing the electromagnetic energy of viewers watching the coronation of Queen Elizabeth II and using it to reconstitute a physical body for itself.
Gaining admittance through his psychic paper, the Doctor struggled on the Tower with Mr Magpie, the Wire's agent, while his friend Tommy Connolly maintained the Doctor's machine for channeling the Wire back through into a form of recordable media. (DW: The Idiot's Lantern)
