KONJIC, BOSNIA AND HERZEGOVINA - FEBRUARY 01: A view of a conference room is seen at "Istanbul" bunker in Konjic, Bosnia and Herzegovina on February 01, 2017. This top secret shelter, named Istanbul, was built from 1956 until the late 1970s to provide a nuclear shelter for former Yugoslavia's iconic communist leader Josip Broz Tito and now this top secret shelter is like a contemporary show called 'Time Machine'. Emre Bastug / Anadolu Agency