The cathedral stands on what was once the western edge of Kilkenny, the ancient capital of the Kingdom of Ossory. The Synod of Rathbreasail in 1111 formally placed the episcopal see here, and the present building began rising in the 13th century. Its most colorful medieval figure was Richard de Ledrede, Bishop of Ossory, best known for his connection to trials for heresy and witchcraft. Around 1324, Ledrede wrote sixty Latin verses in the Red Book of Ossory for his clergy "to be sung on great festivals and other occasions, that their throats and mouths, sanctified to God, might not be polluted with theatrical, indecent, and secular songs." The bishop was essentially providing his priests with sacred alternatives to the popular songs of the day -- a medieval content filter carved into the record books.

The cathedral is built of limestone in the Early English Gothic style, cruciform in plan, with a low central tower supported on columns of Kilkenny's distinctive black marble. Between the nave and each aisle, five clustered columns of the same dark stone carry high moulded arches. The nave is lit by a large west window and five clerestory windows, while the choir features a groined ceiling with fine tracery and carved cherubs. The cathedral contains some of the finest 16th-century monuments in Ireland, including tombs of several Earls of Ormond from the Butler dynasty. The 2nd Earl, the 8th Earl, the 10th Earl, and the 11th Earl are all memorialized here, making St Canice's an accidental Butler family vault. The stained glass windows include an east window that replicates the original 13th-century design.

The round tower is what catches your eye first. At 100 feet, this 9th-century structure predates the cathedral by several hundred years and is one of only three medieval round towers in Ireland that visitors can still ascend to the top. The other two are at Kildare and on Devenish Island in County Fermanagh. The earliest church on this site was likely made of wood before being replaced by a Romanesque stone church, which was itself superseded by the current Gothic cathedral. The Annals of the Four Masters recorded Kilkenny being burned in 1085 and again in 1114, suggesting the town experienced the same cycles of destruction and rebuilding that shaped so many early Irish settlements. Between 1844 and 1867, the cathedral was restored without removing any important medieval features -- a rare example of Victorian restraint.

The area around the cathedral, known as Irishtown, is the oldest part of Kilkenny. This was where the Gaelic Irish population lived, separate from the Norman walled town -- a division that shaped the city's character for centuries. Today the cathedral serves the Church of Ireland as one of six cathedrals in the United Dioceses of Cashel and Ossory. Walking the seventy-five-yard length of the nave, past the black marble columns and the Butler tombs and the carved medieval heads, you are tracing a line from Cainnech's 6th-century wooden chapel through a millennium and a half of continuous worship. From above, the cathedral and its round tower sit at the high point of the city, a visual anchor that has oriented Kilkenny since before the Normans arrived.