Western Europe, particularly France and Italy, have become so popular among global tourists that the previously Soviet-aligned Eastern Europe remains criminally underrated. Berlin is, of course, one of the most influential cities in human history, having been a crucial junction in Charlemagne's kingdom, Barbarossa's Holy Roman Empire, and the Third Reich. It also houses the most notorious symbol of the Cold War: the Berlin Wall. In modern times, the city's progress has gathered tremendous pace, and it now has one of the best standards of living in the world.