Rathfarnham Castle has a very colourful and interesting history. The date of the foundation of the castle is uncertain but research would suggest 1583. It was built by Adam Loftus, a Yorkshire man who became Archbishop of Dublin and Lord Chancellor of Ireland.
It was built as a comfortable defensible residence and by end of the 16th century it was acknowledged as one of the finest castles in County Dublin.
Visitors to the castle can view 18th century interiors by Sir William Chambers and James 'Athenian' Stewart.
The castle is presented to visitors as a castle undergoing active conservation. The visitor can see tantalizing glimpses of the layers of the castle's earlier existence uncovered during research.