St. Patrick's Festival (March 14–17 annually (2026 dates: 14–17 March)). Dublin's flagship citywide festival celebrating Irish culture, heritage, and St. Patrick's Day (March 17) with parades and events across the city.
Bloomsday Festival (June 11–16 annually (culminating June 16)). Week-long celebration of James Joyce's Ulysses, commemorating June 16, 1904 — the day the novel is set. Features 100+ events: readings, walking tours, theatrical performances, lectures. Participants traditionally wear…