Although commemorations by Irish British Armed Forces veterans and families of those killed in the course of the Great War took place at the site for a few years in the late 1940s and 1950s, with some large attendances, the politico-cultural situation in the state, and its nationally dominant ideologically adverse view of Ireland's role in
World War I, and of those who had volunteered to fight in
World War II, prevented the garden from being civically opened and dedicated. The garden was subject to two
Irish Republican paramilitary attacks. On Christmas night 1956 a bomb was placed at the base of its Stone of Remembrance and memorial cross and detonated, but the
County Wicklow quarried
granite withstood the blast with little damage. Another attempt was made to bring it down again with a bomb detonation in October 1958, which once more failed, resulting in superficial damage. A subsequent lack of financing from the government to provision its up-keep and care allowed the site to fall into dilapidation and vandalism over the following decades, to the point that by the late 1970s it had become a site for caravans and animals of the
Irish Traveller community, with the
Dublin Corporation's refuse disposal office using it as a rubbish dump for the city's waste. In addition fifty years of storms and the elements had left their mark, with structural damage unrepaired to parts of the garden's ornamentation. In the mid-1980s economic and cultural shifts began to occur in Ireland which facilitated a regeneration of
urban decay in Dublin, and the beginning of a change in the public's view of its pre-
Irish Revolution national history and identity, which led to a project of restoration work to renew the park and gardens to their former splendour being undertaken by the
Office of Public Works, co-funded by the National War Memorial Committee. On 10 September 1988 the fully restored gardens were re-opened to the public, and formally dedicated by representatives of the four main churches of Ireland, half a century after its creation. In November 2018, an architectural competition was launched to design a bridge to be built over the River Liffey providing access to the gardens from Chapelizod Road. This bridge would be in partial fulfilment of Lutyens' original plan which included a bridge over the river. An architectural design was selected in May 2018. In July 2025, a contractor was appointed to carry out the works. Construction works commenced in October 2025. ==Official ceremonial events at the garden==