St Cynog's church, Llangynog was built in the late medieval or late 18th century period of local stone with a slate roof. It was a simple rectangular structure with no division between nave and chancel and n bellcote and north porch. The church was rebuilt in 1882. Closed for divine service in 1916; the church was deconsecrated in 1963 and demolished in 1964.

Reference: RCAHMW site files.