Once home to around 40,000 Soviet soldiers, this Forbidden City is now abandoned and open to tours in Germany. The last Russian troops left the military complex in 1994. Zossen’s mayor at the time, Werner Lesse, remembers the soldiers “had to leave quickly”, leaving food on the tables and pets behind. Murals of Communist heroes still line the walls and facilities can be seen slowly decaying from a lack of activity. The site attracts visitors every Sunday who are fascinated by the history and reminder of its inhabitants.