3 ms·

Sort of, yes. https://en.wikipedia.org/wiki/BT_Tower#Secrecy https://en.wikipedia.org/wiki/BT_Tower#Secrecy

• biofox 1y ago
  Two more examples of exchanges that were kept secret: https://en.wikipedia.org/wiki/Anchor_telephone_exchange https://en.wikipedia.org/wiki/Anchor_telephone_exchange https://en.wikipedia.org/wiki/Guardian_telephone_exchange https://en.wikipedia.org/wiki/Guardian_telephone_exchange
• lxgr 1y ago
  Wait, what? What else were people supposed to assume about the purpose of a huge tower with very noticeable horn antennas (widely used for long-distance phone calls over line-of-sight microwave at the time)?
  • razakel 1y ago
    It also had a restaurant open to the public.
    • ta1243 1y ago
      The one place in London you can't see it