Josip Broz Tito was a towering figure of the 20th century, a man whose influence is still felt and whose presence is missed across the former Yugoslavia. In Belgrade, I visited the Museum of Yugoslavia and House of Flowers where he is laid to rest. The next day, I was able to experience something life changing - being able to step aboard his private train where he wined and dined everyone from Haile Selassie to Queen Elizabeth II.