The husband of Queen Elizabeth II, the Duke of Edinburgh, has met the Taoiseach, Bertie Ahern, at Government buildings.
This morning Prince Philip attended the Gaisce awards ceremony, at which 91 young people were presented with gold medals.
The President, Mary McAleese, said Prince Philip's attendance added a unique and inspirational dimension to the ceremony.
The occasion marked the 21st anniversary of the President's awards for young people and the 50th anniversary of the Duke of Edinburgh's Award.
His presence is fuelling speculation that the Queen might visit Ireland at some point in the future.