The elevation of Kilkenny is 60 metres (200 ft) above sea level. The area of Kilkenny borough is 3.74 square kilometres (1.44 sq mi). Kilkenny is the smallest city in Ireland and although all cities in Ireland are by the coast or along a river Kilkenny is the only city that is not tidal.
The "Kilkenny Cats" nickname stems from the feral felines that once inhabited the Dunmore caves in the north of the county.
The architect who built the White House in Washington, D.C., James Hoban, was raised on the Earl of Desart’s estate in Cuffesgrange, near Callan in Co. Kilkenny.
In 1922, the Butler family - namely Lord and Lady Ossory - were residents of the castle. The Irish Civil war, raged around them. Lord Ossory memorably wrote that he was woken at the "unreasonable hour of 5.30am" by his butler, who brought the news that Republican forces had seized and occupied his castle.
In 1650 invading Cromwellian forces mounted an attack on Kilkenny castle and although it was initially successfully defended they eventually managed to take control of the city by another route.
Kilkenny, an inland county, is bordered by counties Wexford, Carlow, Laois, Waterford, and Tipperary. Geologically speaking it is mostly limestone, with areas of black marble around Kilkenny city. The rivers Nore, Suir, and Barrow flow through it.