Ardfert Cathedral

Ardfert Cathedral is built on the site of a monastery founded in the 6th century by St. Brendan the Navigator. The site has three medieval church ruins, the earliest building being from the 12th century, with additions made in the 15th century when a small transept was added and battlements were constructed, an ogham stone and a number of early Christian and medieval grave slabs. The cathedral roof was destroyed during the Irish Rebellion of 1641, but the south transept was re-roofed and extended later in the 17th century when it was converted into a Protestant Church. In 1871, when a new Protestant church was opened, the roof was again removed.