The Derry City Walls are the best-preserved city walls in Ireland and among the finest in Europe, yet they were built not by the Irish but by a consortium of London merchant companies, who constructed them between 1613 and 1619 after King James I handed them the city. That arrangement proved remarkably durable: the Honourable the Irish Society technically still owns the walls today.

The walls are barely a mile and a half in circumference, but they carry an outsized amount of history. It was at Ferryquay Gate in December 1688 that thirteen apprentice craftsmen slammed the gates on a Catholic regiment sent by King James II, triggering the Great Siege of Londonderry, which lasted 105 days. The widest section, Grand Parade, may have given English its word "catwalk," where citizens once paraded in their Sunday finery before the Bishop's House.

VoiceMap's self-guided tours walk the full circuit of the walls, connecting the siege of 1689 to the Bogside below and the Troubles that followed, tracing how the same stones have framed Derry's conflicts across four centuries.