The Prince of Wales and the Duchess of Cornwall will today make their historic visit to Mullaghmore, Co Sligo, where Prince Charles' great-uncle Lord Mountbatten was killed by an IRA bomb in 1979.
It is sure to be the most poignant and emotional stop during the prince's four-day tour of Ireland.
Lord Mountbatten was killed along with Doreen Brabourne, who was the 83-year-old mother-in-law of the earl's daughter.
Two teenage boys were also killed - Mountbatten's 14-year-old grandson, Nicholas Knatchbull, and 14-year-old Paul Maxwell from Enniskillen.
Prince Charles and Camilla will also attend a service of peace and reconciliation at St Columba's Church in Drumcliffe today, where they will also see the final resting place of WB Yeats.
Continuing the theme of reconciliation, a granddaughter of one of the victims of the Bloody Sunday massacre is to sing at the event.
Earlier, the couple are due to attend a civic reception featuring performances of Irish poetry and music.
Prince Charles will also visit the Institute of Technology, Sligo.
A trip to Sligo Races will round off the day.