The peninsula was formerly administered by the Ministry of Defence, which conducted secret military tests during both world wars. The Atomic Weapons Research Establishment had a base on the site, and is believed to have developed the firing mechanisms for nuclear devices there. Many of the buildings from this time remain clearly visible from the quay at Orford, including the distinctive-looking 'pagodas' which were designed to collapse in the event of an accidental explosion. There is also a transmitting station on the peninsula, which uses the former Cobra Mist experimental over-the-horizon radar site to send medium wave broadcasts across the North Sea to mainland Europe.
Military - Historic - Closed Facility