Menwith Hill Royal Air Force Station, UK
Distinctive radomes — known to locals as ‘the golf balls’ — dot the landscape at Menwith Hill, but this is no place for those seeking 18 holes and a trip to the bar.
One of the most secretive places on Earth, this RAF station in North Yorkshire provides communications and intelligence support to UK and US agencies, and with security at the highest levels imaginable, visitors are advised to keep their distance.
Rumoured to have links to ECHELON, a clandestine global spying network, demonstrators have long made their feelings known, but inside the high fences, far from curious eyes, work continues at what is believed to be the largest electronic monitoring site in the world. Owned by the UK’s Ministry of Defence, but open to the US Department of Defense under a NATO agreement, this is a place that operates on constant lockdown. Take our advice on this and don’t get too close.