The Old Kilcullen monastic site dates back to the 5th Century.
St Patrick founded the monastery and placed it in the care of St MacTail (Died 548).
The site was attacked by Vikings in 736 and again in 944.
The round tower is thought to date back to the 11th Century.
The tower is close to 11 meters in height, with the round headed doorway close to 2 meters from ground level.
A drawing from 1792 shows the tower in a more complete state.
Old Kilcullen's tower was reduced to its present state in the 1798 rebellion.
The site also has the very small remains of a Romanesque church (dated later than the tower).
Sadly all that remains of the church today is the base walls.
Old Kilcullen also boasts the shaft's of two high crosses, the shaft closest to the tower has some lovely detail the other taller shaft at the back of the graveyard is very worn and I could not make out any details.
The site also has the base of another high cross.
The setting and location for Old Kilcullen could not be better, quite and peaceful with stunning views of the surrounding Kildare countryside.
Access - The site is signposted and a short drive from the N78, parking can be found beside the site leaving you a short walk up an avenue to the graveyard.