The Peace Wall in Belfast went up in 1969 as the troubles broke out between the the 2 communities the Catholic/Irish and the Protestant/British. The wall took 2 years to build and was to last for 6 months. On this wall there is 5 sets of gates that open and close, still to this day the gates open and close on a daily basis. This now has become a tourist attraction as people from all over the world come and leave their peace sayings, and some of those people were Bill Clinton and the Dalai Lama and many others.
You will see this wall and get a lot more facts on the wall when you take the tour with Cab Tours Belfast.