Most of us are old enough to remember its significance (hell, Steelie and Bawb probably remember its construction) but I suspect anyone under 30 has no clue what a big deal this was...
I remember coming home from school that afternoon and seeing this being the news on TV. I still remember how stunned I felt -- like it was too good to be true. 8)
^ +1
I was absolutely stunned. It was a highly emotional moment.
A very interesting article about a press conference may well be what brought down the wall
http://blogs.wsj.com/brussels/2014/11/05/the-fourth-man-who-prompted-the-fall-of-the-berlin-wall/
http://www.ap.org/explore/berlin-wall/