The divided city of Berlin wasa hotbed of spying activity throughout the Cold War, with one famous operation involving atunnel being built by the British and US into Communist East Berlin to enablecommunications cables to be tapped.
Russia's KGB knew about the tunnel thanks to the treachery of George Blake, but did not take action against it in order to protect their mole in British intelligence.
In the 1950s, the US National Security Agency (NSA) used Berlin's highest hill, the Teufelsberg, as a listening station.
The site was frequently used by American soldiers and its five large satellite domes on top of the building, though unused, can still be seen today.
More top news
Edinburgh's poet laureate has offered some words of reconciliation as Scotland prepares to vote on independence in just two days' time.
Temperatures will be on the rise in the next few days, with highs of 25C in the sunshine by Thursday, but do not expect clear blue skies.
A woman who lost her fiance just before they were due to marry has created a moving tribute using the wedding dress she would have worn.