Leinster House: Seat of Ireland’s National Parliament
Site at a Glance
- Rating
- 4.3
- Popularity
- Low
- Country
- Ireland
- Primary era
- Early Modern
- External website
- Open
- Eras represented
- Early Modern, Modern
- Civilizations
- British, Irish
- Site type
- Civic
- Remains
- Palace
On this page16 sections
History
Leinster House is an eighteenth-century Georgian and Palladian palace in Dublin, Ireland, built by the FitzGerald family between 1745 and 1748 as the residence of James FitzGerald, Earl of Kildare. Originally called Kildare House, it stood on the then-isolated south side of the city and became the earl’s official Dublin residence. Its scale and status helped stimulate aristocratic development around Merrion Square and Fitzwilliam Square.
From Kildare House to Leinster House
In 1766, the Earl of Kildare became the first Duke of Leinster, and the family residence was renamed Leinster House. The Act of Union of 1800 abolished the Irish Parliament, contributing to the withdrawal of aristocratic families from Dublin. Leinster House consequently ceased to function as an aristocratic home, although it remained an important urban and institutional building.
The 3rd Duke of Leinster sold the property to the Royal Dublin Society in 1815. Founded to promote agriculture, industry, science, and the arts, the society used Leinster House as its headquarters until 1922. Its grounds became a public exhibition venue, hosting the Dublin Spring Show and Dublin Horse Show on Leinster Lawn, which faces Merrion Square.
Scientific and cultural institutions
The Royal Dublin Society hosted the Great Industrial Exhibition in the grounds in 1853. The Natural History Museum was built on the site in 1857, and later wings accommodated the National Library of Ireland and the National Museum of Ireland. These neighboring buildings remained cultural institutions even after Leinster House became the center of national political life.
Conversion into a parliamentary seat
The Anglo-Irish Treaty of 1921 provided for the Irish Free State, a self-governing Irish dominion that preceded the modern Irish state. The proposed parliamentary site at Royal Hospital Kilmainham was still under British Army control, while the new state needed an immediate meeting place. Michael Collins therefore arranged for the Royal Dublin Society’s large lecture theatre at Leinster House to serve as a temporary chamber for Dáil Éireann, Ireland’s lower parliamentary house, from 1922.
In 1924, financial constraints ended plans to convert Royal Hospital Kilmainham into a permanent parliament house. Leinster House was purchased instead and has remained the home of Ireland’s national parliament. The former ducal residence has served since 1922 as the seat of the Oireachtas, first in the Irish Free State and later in the Republic of Ireland. The complex houses Dáil Éireann, Seanad Éireann, the upper house, their members and staff, and the parliamentary press. The name Leinster House consequently also serves as a shorthand for Irish political activity.
Several proposals for a separate parliament house, including schemes involving Phoenix Park and the Custom House, were not implemented. Adjoining wings of the former Royal College of Science were used for government offices. After the college merged with University College Dublin, the entire former Royal College of Science was taken over in 1990 and converted into government buildings. The neighboring library and museum wings continued to operate as cultural institutions rather than becoming part of the parliamentary complex.
Expansion, conservation, and political associations
Leinster House received successive extensions from the Victorian period onward. A major office expansion was undertaken in the 1960s, and the Leinster House 2000 wing was completed in 2000. These additions provided offices and facilities for elected members, committee work, the press, and other staff. A 2008 report identified serious risks linked to the building’s age, substandard alterations, overloaded upper floors, and inadequate, outdated wiring. Extensive restoration and conservation followed from December 2017 to August 2019, with the original Kildare House section protected beneath temporary scaffolding and a plastic roof.
Lord Edward FitzGerald, a member of the Leinster family, occasionally lived at the house and became involved in Irish nationalism during the 1798 Rebellion, in which he died. The grounds also preserve commemorative associations with the Irish Exhibition held by Prince Albert in the 1850s. A triangular monument on the Merrion Square side honors Arthur Griffith, Michael Collins, and Kevin O’Higgins, three founding figures of Irish independence. Leinster House has also hosted visiting political leaders for joint sessions of the Oireachtas, including U.S. presidents John F. Kennedy, Ronald Reagan, and Bill Clinton, British Prime Minister Tony Blair, Australian prime ministers Bob Hawke, Paul Keating, and John Howard, and French President François Mitterrand. In September 2024, expenditure by the Office of Public Works on a bicycle facility for Dáil members became the subject of political criticism.
Remains
Leinster House is a layered parliamentary complex centered on the former ducal palace. Its surviving buildings combine the original Georgian and Palladian residence with Victorian additions, a 1930s wing, Block 66, and the Leinster House 2000 wing. The complex extends across the area between Kildare Street and Merrion Square, while the neighboring library and museum wings remain physically associated with the site but outside the parliamentary complex.
Former ducal palace
Main facade and materials
The former palace provides Leinster House with its most recognizable public facade. Richard Cassels designed the building, while Isaac Ware contributed to some later elements and interiors. The structure was built principally of Ardbraccan limestone. Granite from Golden Hill quarry in County Wicklow was used on the Merrion Street side in the 1740s. When that quarry was exhausted by 1850, Ballyknockan quarry supplied a geographically nearby substitute for repairs carried out during the 2017 to 2019 conservation work.
Parliamentary chambers
The former Royal Dublin Society lecture theatre was adapted for the temporary Dáil in 1922. A new Seanad chamber was later created in the Duke of Leinster’s former ballroom. The first and second floors of the Dublin residence also provided James Hoban with a model for the White House’s internal arrangement, while Leinster House influenced the White House’s original cut-stone exterior.
Parliamentary extensions
Victorian and 1930s additions
The Victorian additions contain the Dáil Chamber. A separate wing built in the 1930s houses Labour Party TDs and senators. These structures form part of the complex’s gradual adaptation from an aristocratic residence and society headquarters into a working parliament.
Block 66
Block 66 is a five-storey office building constructed around 1966. It contains offices for Fine Gael TDs and senators, two ground-floor restaurants, two bars, the office suite of the leader of the largest Oireachtas party, and party meeting rooms.
Leinster House 2000
Leinster House 2000 is a wing erected in 2000 to the north of the former ducal palace. It contains offices for members of all parties, committee rooms, and office suites for the leaders of Labour and Fianna Fáil. Additional parliamentary offices occupy Kildare House across Kildare Street, the upper floors of Agriculture House, and premises on Molesworth Street, including offices provided for former taoisigh, Ireland’s prime ministers.
Grounds and commemorative features
Leinster Lawn
Leinster Lawn lies on the Merrion Square side of the complex. The rear garden area was excavated in 2000 for a temporary staff and parliamentary parking area. The parking later became permanent, and the lawn was replanted in a different form.
Statues and monuments
A large bronze statue of Queen Victoria by John Hughes once stood on the Kildare Street frontage. King Edward VII unveiled it in 1904. It was removed in the late 1940s because its position was considered inappropriate outside the Irish parliament, transferred to Australia, and re-erected in 1987 in front of the Queen Victoria Building in Sydney.
A large triangular monument facing the garden on the Merrion Square side commemorates Arthur Griffith, Michael Collins, and Kevin O’Higgins. A statue of Prince Albert commemorates the major Irish Exhibition he held on Leinster Lawn in the 1850s.
