The Irish Architectural Archive was established in 1976 by Dr Edward McParland and Nicholas Robinson as the National Trust Archive. Its objective is to collect and preserve material of every kind relating to the architecture of Ireland, and make it available to the public. It is based at 45 Merrion Square, Dublin, and is an independent private company with charitable status. 45 Merrion Square, a Georgian building constructed in 1794, was restored between 2002 and 2004 for use as an archive by the Office of Public Works. The repository serves as the main collection of diverse materials pertaining to Irish architecture.
The organisation's headquarters at 45 Merrion Square.