|This section requires expansion. (May 2013)|
The peace lines or peace walls are a series of border barriers in Northern Ireland that separate Catholic and Protestant neighbourhoods. They have been built at urban interface areas in Belfast, Derry, Portadown and elsewhere. The stated purpose of the Peace lines is to minimise inter-communal violence between Catholics (most of whom are Irish nationalists who self-identify as Irish) and Protestants (most of whom are unionists who self-identify as British).
The Peace lines range in length from a few hundred yards to over three miles (5 km). They may be made of iron, brick, and/or steel and are up to 25 feet (7.6 m) high. Some have gates in them (sometimes staffed by police) that allow passage during daylight but are closed at night.
The first Peace lines were built in 1969, following the outbreak of the 1969 Northern Ireland riots and "The Troubles". They were built as temporary structures meant to last only six months, but due to their effective nature they have become wider, longer and more permanent. Originally few in number, they have multiplied over the years, from 18 in the early 1990s to 48 today; in total they stretch over 21 miles (34 km), with most located in Belfast. They have been increased in both height and number since the Good Friday Agreement of 1998.
In recent years they have even become locations for tourism. Black taxis now take groups of tourists around Belfast's Peace Lines, trouble spots and famous murals.
The most prominent Peace lines in the past few years separate: the nationalist Falls Road and unionist Shankill Road areas of West Belfast; the Catholic Short Strand from the Protestant Cluan Place areas of East Belfast; and the Protestant Fountain estate and Catholic Bishop Street area of Derry.
In 2008 a public discussion began about how and when the Peace lines could be removed. While on 1 September 2011 Belfast City Council agreed to develop a strategy regarding the removal of peace walls, a study was released in 2012 indicating that 69% of residents believe that the peace walls are still necessary because of potential violence. At the end of 2011, several local community initiatives resulted in the opening of a number of interface structures for a trial period.In January 2012, the International Fund for Ireland launched a Peace Walls funding programme to support local communities who want to work towards beginning to remove the peace walls. 
- Donaghy, Brendan (ed.). "Launch of North Belfast Peace Walls Project". Mediation Digest.
- Tony Macaulay (July 2008). "A Process for Removing Interface Barriers: A discussion paper proposing a five phase process for the removal of ‘peace walls’ in Northern Ireland". Macaulay Associates. Retrieved 2010-02-06.
- "Belfast's peace walls may be set to tumble". The Irish Times. 3 September 2011. Archived from the original on 3 September 2011.
- "Belfast City Council agrees to act on peace walls". BBC. 2 September 2011. Retrieved 2 May 2013.
- "Peace Walls 'As Contentious As Ever'". Ulster Research. Retrieved 23 November 2012.
- McAdam, Noel (18 January 2012). "£2m to tear down Northern Ireland peace walls". Belfast Telegraph. Retrieved 2 May 2013.
- "Northern Ireland: Cash Boost For Plan To Bring Down Peace Walls". Huffington Post. 1 January 2012. Retrieved 2 May 2013.
- Paul Brown (4 February 2002). "Peace but no love as Northern Ireland divide grows ever wider". The Guardian. Retrieved 6 February 2010.
- Margrethe C. Lauber. "Belfast's Peacelines: An Analysis of Urban Borders, Design and Social Space in a Divided City". mspacenyc.com. Archived from the original on 20 August 2008. Retrieved 6 February 2010.
- Tony Macaulay (July 2008). "A discussion paper proposing a five phase process for the removal of ‘peace walls’ in Northern Ireland". Macaulay Associates. Retrieved 6 February 2010.
- Shawn Pogatchnik (3 May 2008). "Despite peace, Belfast walls are growing in size and number". USA Today. Retrieved 6 February 2010.