An uncertain future for Berlin's former Stasi headquarters The complex once housed the repressive East German secret police and espionage service. Some fear the history will be lost forever. For those interested in an inside look at the world of espionage, Berlin has a lot to offer. Much of the country's legacy can be found right next to Potsdamer Platz in the German Spy Museum. Although it's currently closed due to the pandemic, the museum has been welcoming visitors since 2015 and offers a multimedia journey through time. From a World War I Morse code station to the password hackers of the internet age, it covers the main developments in espionage.