In pictures: The day the Rising began 100 years on

Minister for the Environment Alan Kelly speaks at an event in New York to commemorate the Rising

The events at Arbour Hill were the centrepiece of the State commemorations

Large crowds gathered outside the GPO from early morning

Many dressed in contemporary clothes from the period

President Higgins laid a wreath on behalf of the Irish people

The Defence Forces raised the tricolour on O'Connell Street

A sold-out crowd witnessed the GAA's 1916 commemorative 'Laochra' event

'Laochra' involved dance, song and poetry after the National Football League finals

A procession from the church to the burial place of 14 of the executed leaders

Events took place around the country, including in Sligo (Pic: Patricia McHugh)

There was a mass at the Church of the Sacred Heart at Arbour Hill

Marching bands from Northern Ireland, Scotland and the USA joined the parade from O'Connell St to Glasnevin

There was a concert on O'Connell Street (Pic: Oisín O'Connell)

A 5km run ended at the Royal Kilmainham Hospital (Pic: Joan McHugh)

There was a commemorative mass at 'Teach an Phiarsaigh', Padraig Pearse's cottage

Events also took place in New York (Pic: Jean Quinn)

Minister for the Environment Alan Kelly represented the Government in New York (Pic: Jean Quinn)