Bryn Seion Independent Chapel was built in 1831, with later alterations in 1870. It is built from rubble stone with a slate roof over and crested ridge tiles. Within the chapel there is a three-sides gallery mounted upon four marbled columns, and a panelled timber gallery front. The ballustrated pulpit dates from the later nineteenth century, and has a curved front and steps up each side.

Source: Cadw Listed Buildings Record

K Steele, RCAHMW, 13 February 2009