Park Congregational Chapel, including enclosure railings

The Park Congregational Chapel, built between 1864 and 1865 by Lander and Bedells of London, is a Gothic-style structure made of blue lias rubble stone with Bath stone dressings and features a steep slate roof. The chapel includes a north porch tower topped with a spire that rises to 104 feet. The sides have seven windows and are supported by closely spaced buttresses, while a chancel was added to the south end around 1909 to 1911.

The entrance front showcases a slender central tower with diagonal buttresses reaching up to the second stage. It features a large gabled ashlar doorway with shafting, carved capitals, and a moulded and cusped arch. Above this, the gable leads to a triplet of tall lancet windows with ringed shafts, leaf capitals, and linked hoodmoulds. The upper stage is slightly recessed and has an octofoil roundel on each face, with the upper angles cut back to support the octagonal spire. The spire's short ashlar octagonal base includes roundels on each face and a moulded leaf cornice beneath the spire. The main church gable is coped and adorned with square corner finials, and each side features three-light pointed windows above lean-to projections with canted outer angles and a triplet of pointed stepped stair lights.

The side elevations contain 2-light basement mullion windows and 2-light pointed main windows, which have bands at the sills and where the arches spring. At the rear, the later chancel has a tall blank south gable and a gabled projection to the east with a plate traceried 2-light window.

Surrounding the chapel are circa 1895 spearhead railings with cast-iron Gothic gatepiers designed by Thomas and Clement of Llanelli, extending from the front down Inkerman Street to provide rear access to the schools.

Inside, the chapel features a five-sided boarded low 7-bay roof and a west gallery supported by two iron columns. There are two stained glass windows on the west side, dating from 1884 and 1909, and three on the east side from 1919, 1934, and 1974. The chancel includes an organ at the south end and much early 20th-century Gothic panelling.