O'Connell Street in the context of "Proclamation of the Irish Republic"

Sir John Gray JP (13 July 1815 – 9 April 1875), sometimes spelt John Grey, was an Irish physician, surgeon, newspaper proprietor, journalist and politician. Gray was active both in municipal and national government for much of his life, and had nationalist ideals – which he expressed as owner of the Freeman's Journal, chairman of the Dublin Corporation Water Works Committee between 1863 and 1875, and Member of Parliament in the House of Commons of the United Kingdom of Great Britain and Ireland for Kilkenny city from 1865 until his death. He was a supporter of Daniel O'Connell, and later of Charles Stewart Parnell, and advocated a repeal of the Act of Union. Through his offices with Dublin Corporation, the Vartry Reservoir water supply works were completed, introducing a freshwater supply to Dublin city and suburbs. He died at Bath in England on 9 April 1875. Shortly after his death, his contributions to the provision of the water supply, and the beneficial impact this had to conditions of public health in Dublin, were recognised in a memorial statue on O'Connell Street.

The Spire of Dublin, alternatively titled the Millennium Spire or the Monument of Light (Irish: An Túr Solais), is a large, stainless steel, pin-like monument 120 metres (390 ft) in height, located on the site of the former Nelson's Pillar (and prior to that a statue of William Blakeney) on O'Connell Street, the main thoroughfare of Dublin, Ireland.