Church of the Holy Trinity

The Church of the Holy Trinity features a nave with four bays, a porch on the southwest bay, a chancel with two bays, and an octagonal bell tower located in the northwest corner. There is a vestry at the northwest end of the chancel. The building has a moulded stone plinth and wall string, with moulded brick lancets that are paired, featuring ringed terracotta shafts and hoodmoulds on the chancel, as well as triple lancets at the east end. Square-set buttresses are positioned at the east corners. The open porch has a similar moulded brick arch with hood mouldings and carved head terminals. The inner arch of the open porch also features hood mouldings and a moulded and boarded door. The octagonal tower is offset above the roof and has a round open colonnade that supports a conical spire, with a terminal cross on the chancel.

Inside, the nave has collar beam trusses supported by wall posts and timber corbels. The chancel arch is wide and has mouldings that extend down to the floor. The sanctuary is raised by two steps and is paved with encaustic tiles. The communion rail is arcaded and dates from the 17th century. The pulpit, made of Bath stone and featuring a rugged cross, was installed in 1845. The pews, also from 1845, include numbered ones on the north side and free unnumbered pews on the south side. The organ, by P Conacher & Co. of Huddersfield, was relocated here from Bethel Chapel on Mount Street in Welshpool.

The church contains stained glass in twin west lancets dating from around 1920. Monuments have been refixed from an earlier chapel. In the chancel, on the north wall, there is a white marble tablet in the form of a Greek sarcophagus, bearing coloured family arms, dedicated to John Owen of Penrhos, dated 1823 and created by R Milnes. Another tablet of a similar design, featuring a feathered urn in a recess, commemorates Margaret Owen and Elizabeth Lyster, who was the daughter of John Owen of Penrhos, and dates from 1816, made by I Carline of Salop. On the south wall, there is a wide pedimented marble tablet with mantled lozenge arms below it, dedicated to Elizabeth Lyster, daughter of Hugh Derwas of Penrhos, dated 1753. Her great uncle was the builder of the previous chapel.