The village of Kilteel lies six miles north of Naas at the foot of the Wicklow mountains. It is here that we find Kilteel Castle. It was built in the early thirteenth century by Maurice Fitzgerald for the Knights Hospitallers of St. John of Jerusalem. The site upon which the castle was built was once a monastic settlement.
There is little mention of the castle in the fifteenth century but in the sixteenth century the lease was given to Thomas Alen and his wife. In 1669 Col. Richard Talbot, Earl of Tyreconnell became the owner of Kilteel. He then sold the castle to Sir William Fownes of Kilkenny. It remained in his family until 1838 when it was sold to the Kennedys of Johnstown-Kennedy.
Today the castle is a designated National Monument. It consists of a tower house dated to the fifteenth century, another projecting towerhouse with a spiral stairs and two further rooms at the gate-way.