St Illtyd, St Gwynno & St Dyfodwg

Set high at the top of Llantrisant hill, the church was constructed mid 13th century, though there is evidence of christian worship at this site as far back as the 7th century. The grade II* listed church dominates the skyline in all directions and can be seen for miles around. The recently restored Norman tower, built in 1490, now boasts one of only 13 sets of bells in Wales with 10 or more bells (as at August 2026). There are a number of iconic historic features throughout the church, such as the 18th century brass candelabra with 18 candles and only comparable to that in Brecon cathedral. 

The 7th century resurrection stone, 12th century font and 13th century warrior effigy are the oldest relics remaining from medieval times. Amongst the more unique artefacts of great appeal to visitors are the total immersion baptistry at the base of the tower and the "beardless christ" stained glass window above the altar as designed by Edward Coley Burne-Jones and produced in partnership with William Morris. Both the baptistry and stained glass windows were critical elements of the major restoration works undertaken in the late 1800s.

A visit to the quaint and historic town of Llantrisant is not complete without at least a walk via the near by guildhall and around the exterior of the church, taking in the unique and breathtaking views over the start of the Rhondda to the North, and the Vale of Glamorgan to the South with the Somerset coastline in the distance (on a clear day).