
The Phoenix Park is an urban park in Dublin, Ireland, lying 2–4 km west of the city centre, north of the River Liffey. Its 11 km perimeter wall encloses 707 hectares ; it is one of the largest enclosed recreational spaces within any European capital city. It includes large areas of grassland and tree-lined avenues, and since the 17th century has been home to a herd of wild fallow deer. The English name comes from the Irish fionn uisce meaning "clear water". The Irish Government is lobbying UNESCO to have the park designated as a world heritage site.

Áras an Uachtaráin, formerly the Viceregal Lodge, is the official residence and principal workplace of the President of Ireland. It is located off Chesterfield Avenue in the Phoenix Park in Dublin. The building design was credited to amateur architect Nathaniel Clements but more likely guided by professionals and completed around 1751 to 1757.

Ashtown Castle is a tower house in the Phoenix Park in Dublin, Ireland.

Decimus Burton was one of the foremost English architects and urban designers of the 19th century. He was the foremost Victorian architect in the Roman revival, Greek revival, Georgian neoclassical and Regency styles. He was accomplished also in the cottage orné, picturesque and neogothic styles. He was a founding fellow and, later, vice-president, of the Royal Institute of British Architects, and architect to the Royal Botanic Society from 1840 and an early member of the Athenaeum Club, London, whose club premises he designed and which the company of father, James Burton, the pre-eminent property developer of Georgian London, built. Modern architectural historians Guy Williams (1990) and Dana Arnold (2004) contend that Burton's contribution to architecture has been underestimated: as a consequence of the misattribution to John Nash of many of his works; of his vituperation by his neo-gothic rival, Augustus Pugin; and of the consequent retention of his archives by his family.

The Deerfield Residence is the official residence of the United States Ambassador to Ireland.

Dublin Zoo, in Phoenix Park, Dublin, is a zoo in Ireland, and one of Dublin's most popular attractions. Established and designed in 1830 by Decimus Burton, it opened the following year. The zoo describes its role as conservation, study, and education. Its stated mission is to "work in partnership with zoos worldwide to make a significant contribution to the conservation of the endangered species on Earth".

The Great Ireland Run is an annual 10-kilometre road running competition which is held in Phoenix Park, Dublin, Ireland in mid-April. It is part of the Great Run series of athletics competitions. It is sponsored by SPAR and features both an elite race and a popular race.

Knockmaree Dolmen, or Knockmaree Cist, is a prehistoric site of the Neolithic period, in Phoenix Park just north of Chapelizod, near Dublin, Ireland. Other forms of the name are Knockmary or Knockmaroon Dolmen, or Cnoc-Maraidhe.

The Magazine Fort is a bastion fort and magazine located within the Phoenix Park, in Dublin, Ireland. Built in 1735, it was occupied by British Armed Forces until 1922 when it was turned over to the Irish Defence Forces after the Anglo-Irish Treaty. The Irish Army continued to operate the site as an ammunition store through the mid-20th century. It was fully demilitarised by the 1980s. The fort is now managed by the Office of Public Works. As of 2015, it was in a derelict state and not open to the public, however some repairs were undertaken and the site partially opened for "limited guided tours" from 2016.
Ordnance Survey Ireland is the national mapping agency of Ireland. It was established on 4 March 2002 as a body corporate. It is the successor to the former Ordnance Survey of Ireland. It and the Ordnance Survey of Northern Ireland (OSNI) are the ultimate successors to the Irish operations of the British Ordnance Survey. OSI is part of the Irish public service. OSI has made modern and historic maps of the state free to view on its website. OSI is headquartered at Mountjoy House in the Phoenix Park in Dublin. Mountjoy House was also the headquarters, until 1922, of the Irish section of the British Ordnance Survey.

Phoenix Cricket Club is a Dublin-based club that currently fields six men's teams, two women's teams, youth teams in five age bands and an over 40s "Taverners" team.

The Phoenix Park Murders were the fatal stabbings of Lord Frederick Cavendish and Thomas Henry Burke in Phoenix Park in Dublin on 6 May 1882. Cavendish was the newly appointed Chief Secretary for Ireland, and Burke was the Permanent Undersecretary, the most senior Irish civil servant. The assassination was carried out by members of the rebel group Irish National Invincibles, a more radical breakaway from the Irish Republican Brotherhood.

Phoenix Park Racecourse is a former horse racing venue in Ireland. It was located in the townlands of Ashtown and Castleknock in the civil parish of Castleknock on the northern edge of the Phoenix Park in Dublin. The course was founded by JHH Peard, and racing began there in 1902.

The Phoenix Park Tunnel is a railway tunnel in Dublin, Ireland. The tunnel was built in 1877 and begins at the Liffey Railway Bridge near Heuston Station, running underneath the Phoenix Park for 690 metres before re-emerging close to the junction of the Cabra Road and Navan Road. It joins with the Sligo line near Glasnevin, before continuing to Dublin Connolly.

Pope Francis visited Ireland on 25 and 26 August 2018, as part of the World Meeting of Families 2018. It was the first visit by a reigning pontiff to the country since 1979.

Pope John Paul II visited Ireland from Saturday, 29 September to Monday, 1 October 1979, the first trip to Ireland by a pope. Over 2.5 million people attended events in Dublin, Drogheda, Clonmacnoise, Galway, Knock, Limerick, and Maynooth. It was one of John Paul's first foreign visits as Pope, who had been elected in October 1978. The visit marked the centenary of the reputed apparitions at the Shrine of Knock in August 1879.

The Royal Hibernian Military School was founded in Dublin, Ireland, to educate orphaned children of members of the British armed forces in Ireland. In 1922 the Royal Hibernian Military School moved to Shorncliffe, in Folkestone, Kent, and in 1924 it was merged with the Duke of York's Royal Military School which last, by then, was in its current location atop 'Lone Tree Hill' above Dover Castle.

The Royal Military Infirmary (RMI) in Dublin was located at the southeastern edge of Phoenix Park, one of several former British military installations in the area. The hospital buildings are now part of the Irish Department of Defence's estate and currently houses Ireland's Office of the Director of Public Prosecutions. The bulk of the British Army's medical services in Dublin were transferred from the RMI to a new hospital at Arbour Hill in Dublin in 1913. The Infirmary buildings are protected as they are nationally significant architecture.

St Mary's Hospital in the Phoenix Park, Dublin provides accommodation to dependent older persons.

The Deerfield Residence is the official residence of the United States Ambassador to Ireland.

The Wellington Monument, or more correctly the Wellington Testimonial, is an obelisk located in the Phoenix Park, Dublin, Ireland.