In class this week, we discussed the Cold War, specifically what caused it to end. A climactic event that signified the end of the Cold War was the fall of the Berlin Wall in 1989.
In November of 2013, my senior AP Government class took a field trip to the Ronald Reagan Library in Simi Valley. At the Library, they have preserved a portion of the Berlin Wall that had collapsed, which I found very interesting to literally be in the presence of a piece of history.