Church of St. Llywel in Llanllowell probably dates back to the 13th century. In 1872 it was significantly rebuilt.
The church is a small and simple building on a rectangular plan with a porch from the south. Inside it, two stone medieval benches have been preserved. The western facade has a small, slit window with an early medieval design. On the southern side there are two windows in the prependicular gothic style, rebuilt in the 19th century, a narrow portal to the chancel and a stone projection with a small opening, containing stairs inside. The eastern wall has another window, transformed in the nineteenth century, and a small buttress along the entire ground part. The northern side, apart from windows from the Victorian era, also has one small, early medieval opening.
Website britishlistedbuildings.co.uk, Church of Saint Llywel A Grade II Listed Building in Llantrisant Fawr, Monmouthshire.