Capel M C Cefn Nannau

Capel M C Cefn Nannau is a chapel built with pebbledashed rubble featuring painted stone and rendered flush dressings, topped with a slate roof that has red clayware ridges. The entrance is located at the gable end and is notable for its two symmetrically gabled porches, each with a 4-panelled door facing the other, leading to a narrow passage that opens up to a gable end window. Above the window, there are paired lancets with a blind spandrel, and the architrave is decorated with key blocks. The chapel also features stained glass with patterned leadwork. A string course runs along the eaves, and a mid-gable band is interrupted by a single lancet. At the apex of the gable, there is an eared architraved vent. Each side of the building has three windows with rendered, eared, and shouldered architraves, and the central panels of mauve glass are surrounded by margin glazing made of cast textured glass.

At the rear, there is a Sunday school room accessed through a side porch. Inside, the chapel has a flat ceiling made of patterned boarding and two large central roof vents. The walls are plastered with painted splayed window reveals. A moulded pointed arch is located behind the raised pine pulpit, which features a galleried top that curves around to the central book stand. There is an enclosed set fawr, and brass oil lamp brackets are positioned on either side of the arch. The chapel contains raked and numbered pine pews that can seat a total of 152 people. The Sunday school or vestry at the rear has high dado boarding.