Explore Berlin’s former Soviet sector, a Cold War battleground and foundation of Communist East Berlin. Learn of life behind the Iron Curtain, and see how the DDR and the Stasi, the largest spy network the world has ever seen, kept an entire population under observation. Trace the CIA & KGB spy stories at the US and massive former Soviet embassies. This tour involves a train journey – an AB travel ticket should be purchased before joining the tour. *Average tour length. The independent guides with whom we work have your best interests in mind; while the tour usually includes the sites and stories above and lasts this long, your tour may vary depending on what your guide thinks is best for your group! Take advantage of our group discount of 10% for groups of 10 or more!