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The Irish Architectural Archive was established in 1976 by Dr Edward McParland and Nicholas Robinson to collect and preserve material of every kind relating to the architecture of Ireland, and make it available to the public. It is based in Merrion Square, Dublin, a notable example of the city's Georgian architecture.

Merrion Square (Irish: Cearnóg Mhuirfean) is a Georgian garden square on the southside of Dublin city centre.

The Great Industrial Exhibition in 1853 was held in Dublin, Ireland. In its day, it was the largest international event to be held in Ireland. The Irish Industrial Exhibition Building, located on the grounds of Leinster House, housed the entire fair. It lasted from 12 May to 31 October, Queen Victoria accompanied by the Prince Consort and the Prince of Wales, paid an official visit on 29 August.

American College Dublin, a constituent college of Irish American University, is a private not-for-profit liberal arts institution accredited by the Middle States Commission on Higher Education (MSCHE). Established in 1993 in Dublin Ireland, the institution is located in the center of Dublin on Merrion Square in a number of Georgian era houses, one of which is the childhood home of Oscar Wilde.

The Central Catholic Library (Irish: Leabharlann an Chreidimh) is a library located in Dublin, Ireland. It was founded by Fr. Stephen Brown, SJ on 25 June 1922 with the goal of helping the laity to educate themselves. It is a voluntary subscription library (one of two remaining subscription libraries remaining on the island of Ireland) and is open to visitors five days a week.

Institute of Archaeologists of Ireland (Irish: Institiúid Seandálaithe na hÉireann) is an Irish archaeology organisation based in Dublin, Ireland. Founded in Merrion Square, Dublin in August 2001, the organisation represents archaeologists who are working throughout Ireland.

The Oscar Wilde Memorial Sculpture is a collection of three statues in Merrion Square in Dublin, Ireland, commemorating Irish poet and playwright Oscar Wilde. The sculptures were unveiled in 1997 and were designed and made by Danny Osborne.

The National Maternity Hospital (Irish: Ospidéal Náisiúnta Máithreachais), popularly known as Holles Street Hospital, is the largest maternity hospital in Ireland. The hospital is located at the eastern corner of Merrion Square, at its junction with Holles Street and Lower Mount Street in Dublin. It is managed by Ireland East Hospital Group.