GPO Witness Irish History Museum – GPO Witness History is a new visitor attraction in the iconic GPO (General Post Office) building on O’Connell Street. This exhibition tells the story of what happened inside the General Post Office during Easter Week in 1916. History will come to life through electronic touch screens, video, audio visual booths, sound and authentic artefacts. Please sign up at school reception. Tickets: €10 per person. Meeting outside Horner School at 14:00, visit will start at 14:30.