Y Gaer Roman Fort
Archaeological site
Church building
St Cynog's Church is an active parish church in the village of Defynnog, Powys, Wales. The dedication is to Saint Cynog, one of the 24 children of Brychan, a legendary 5th-century king of Brycheiniog. Dating from the 15th century, with earlier elements, the church was restored in the late 19th century.
The churchyard is notable for its collection of ancient yew trees, the Defynnog Yew which is among the oldest in Britain. St Cynog's is designated by Cadw as a Grade I listed building.