Londonderry's walls celebrate their 400th birthdayPublished8 March 2013Shareclose panelShare pageCopy linkAbout sharingImage caption, 2013 marks Londonderry's year as the first UK City of Culture. It also marks 400 years since the Maiden City's famous walls were commissioned. This engraving illustrates the Siege of Derry following the arrival of James II at Kinsale, depicted in the foreground. (Photo by Hulton Archive/Getty Images)Image caption, The walls were built by the Honourable the Irish Society as defences for early 17th century settlers from England and ScotlandImage caption, This weekend, two special church services at St Columb's Cathedral in Derry and at St Patrick's Church in Coleraine, will mark the four centuries since the signing of the charter that established the city and its defencesImage caption, Derry was the first planned city in Ireland. With four main roads leading off a central 'Diamond', passage into the city was originally made through four gates like this one at Ferryquay Gate. Later, three more gates were addedImage caption, The walls are Northern Ireland's largest state monument and, as the last walled city to be built in Europe, many argue the Maiden City's ramparts are the most complete and spectacularImage caption, The four gates built into the original design were Bishop's Gate, Ferryquay Gate, Butcher Gate and Shipquay Gate (pictured above circa 1900). Magazine Gate, Castle Gate and New Gate were added later, making seven gates in totalImage caption, During the troubles, most of the structure was sealed off for security reasonsImage caption, With the easing of violence in the mid 1990's, public access was slowly restored and following the Good Friday Agreement, the entire 1.5km circuit was re-openedImage caption, While commissioned in 1613, the walls were constructed between 1614 and 1619Image caption, According to Derryswalls.com, the total cost of the project was calculated at £10,757Image caption, Historic buildings within the walls include the 1633 Gothic cathedral of St Columb's, the Apprentice Boys Memorial Hall and Austin's - Ireland's first department storeImage caption, Derry's fortifications were never breached, withstanding several sieges including one in 1689 which lasted 105 days, hence the city's nickname, the Maiden CityImage caption, Maintenance of the walls is a complicated affair involving collaboration between NIE, the Roads Service, Derry City Council, the City Centre Initiative, Derry Visitor And Convention Bureau and the Honourable, the Irish Society who still own the city defences after 400 hundred yearsImage caption, The Department of the Environment has taken care of them since 1955. A team of masons based in Derry keep the structure in good repair. One of the team recently retired after 35 years on the wallsImage caption, The walls have become a valuable resource for tourism entrepreneurs like Martin McCrossanImage caption, Although the walls are now open to everyone, they may still hold secrets. Legend has it that beneath them is a hidden network of passages built during the Great Siege to connect the city undergroundRelated internet linksDerry~Londonderry City of Culture 2013Historic Walls of DerryDerrys WallsThe BBC is not responsible for the content of external sites.