A section of the peace wall that divides Catholic and Protestant communities in Belfast wraps around houses in Cluan Place, east Belfast October 27, 2012. The first barriers were built in 1969, following the outbreak of the Northern Ireland riots known as "The Troubles." They were built as temporary structures meant to last only six months, but they have multiplied over the years, from 18 in the early 1990s to 40 today; in total they stretch over 13 miles (21 km), with most located in Belfast. REUTERS/Cathal McNaughton