Nowadays, Kilkenny Castle is effectively three-sided. One of the four walls - and one of the great round drum towers - has disappeared over time.
Where did it go? Well, the Eastern wall and the North-Eastern tower were blown up during the 1650 Cromwellian siege of Ireland.
The Butler family handed Kilkenny Castle over to the people of Kilkenny in 1967 – for £50!
The population of County Kilkenny is 95,419 according to the 2011 census ... plus an undisclosed number of Kilkenny cats.
The annals tell of a terrible massacre which took place in Dunmore Caves, with 1000 people killed by attacking Vikings in 928AD. Over the years there have been numerous finds of human bones, which together with finding of the Viking artifacts, seem to bear out that terrible tale.
One of the most instantly recognised buildings in Ireland, Kilkenny Castle has been an important site since Strongbow constructed the first castle, probably a wooden structure, in the 12th century.
All-time top scorer in the All-Ireland Senior Hurling Championship is TJ REID with 641 points in 82 games, scoring 30-551.
Kilkenny Castle has soared past some incredible competition to take the title of the most popular paid visitor attraction managed by the Office of Public Works (OPW) in Ireland.
AKA is a voluntary run arts festival that showcases the hard work and talent of independent artists and community groups across Kilkenny county and city.