Taoiseach Enda Kenny and Minister for Children Frances Fitzgerald have attended a summit of the British-Irish Council at Cardiff Castle in Wales.
The council was established under the Good Friday Agreement to promote the special relationships between the eight Member Administrations in Ireland and the UK.
Today's British Irish Council was the third time the body has met in Wales since it was set up as part of the Northern Ireland peace process in 1998.
It brings together ministers from the UK, Scottish and Welsh governments, the Northern Irish executive, Guernsey, Jersey, and the Isle of Man, as well as the Republic of Ireland.
Officials say its purpose is to promote positive and practical relationships between each nation.
Representatives of each government discussed the role of infrastructure in helping economic growth.