Early in the 7th century, St Gobban founded a monastery at Old Leighlin, which once accommodated 1,500 monks. The site was the location of an important church synod in 630AD which influenced the system for establishing the date of Easter each year, a formula still used to this day.

St Laserian’s Cathedral replaced the 7th century monastery. The cathedral embraces a fascinating and often violent history of Viking raids, murder and religious turbulence. Its 13th century nave and chancel, and its 15th century tower and Lady Chapel remain largely unchanged. Also to be seen are the four bay sedilia, the 12th and 13th century fonts and the Catherine O’Brien East Window. Nearby is the 7th century Cross of Saint Laserian and his holy well, which continues to be venerated and attracts offerings some 14th centuries after his death.

Today, St Laserian’s Cathedral remains an unspoilt and mystical place. It is open to the public daily from May to the end of September. There is no admission charge but voluntary contributions towards the upkeep of the Cathedral are very much appreciated.