A gymnasium for soldiers who used to man the army base guarding the so called "Honecker Bunker", an underground structure designed to as refuge for the East Germany's leadership in case of emergency, in the town of Prenden outside Berlin, September 8, 2014. Hidden away in a forest near Berlin lies a huge abandoned Cold War-era bunker, built to withstand a nuclear attack, that enthusiasts hope can become a new magnet for tourists visiting the former East Germany. Picture taken September 8, 2014. REUTERS/Thomas Peter (GERMANY - Tags: POLITICS CONFLICT SOCIETY TRAVEL)