A few years ago, most people considered walls and militarized borders as things of the past. Today, the idea is back. Yet, as we look back at historical example of walls and most prominently the history of the Berlin Wall and divided Germany, the past has a few lessons to offer. We can ask how the Berlin Wall was supposed to work, what it meant for the people living with it, and if it fulfilled its task in the first place. With a specific interest in how people in the East and the West responded to the Berlin Wall, this lecture will look back at divided Germany, the short and long term consequences of the fortification of its internal border, and the question of human rights.