Leinster House was the former ducal residence in Dublin of the Duke of Leinster, and since 1922 has served as the parliament building of the Irish Free State, the predecessor of the modern Irish state, before whic… See more

Ireland's parliament over the centuries had met in a number of locations, most notably in the Irish Houses of Parliament at College Green, next to Trinity College Dublin. Its medieval parliament consisted of two Houses, a … See more

The 3rd Duke of Leinster sold Leinster House in 1815 to the Royal Dublin Society. In 1853 the Great Industrial Exhibition was hosted in its grounds. At the end of the nineteenth century, two new wings were added, to h… See more

The Anglo-Irish Treaty of 1921 provided for the creation of a self-governing Irish dominion, to be called the Irish Free State. As plans were made to bring the new state into being, the Provisional Government under … See more

The main building has undergone regular extensions from Victorian times, through to a major extension to create offices for TDs in the 1960s, to most recently the building of Leinster House 2000, a new block of offices built to the … See more