Augustine Bristo Congregational Church, 41-43 George Iv Bridge, Edinburgh

The Augustine Bristo Congregational Church, located at 41-43 George IV Bridge in Edinburgh, was designed by J, J M and W H Hay and built between 1857 and 1861. This symmetrical church features a freestyle design with a nave and flanking aisles, highlighted by a distinctive central entrance tower that is slightly advanced and has a square plan. The tower is three stages high and topped with three tiered octagonal lanterns, complete with a metal weathervane at the apex.

The church has a six-bay elevation facing Merchant Street to the north, with a two-storey basement. It is constructed from sandstone ashlar, with rock-faced stone used for the two basement levels. Architectural details include a roll-moulded base course, band courses, a string course, and a blocking course. Pilaster strips with an Egyptian motif divide the bays, and the window openings are predominantly round-arched, with some rectangular tripartite openings on the north side. The ground level on the north side features segmental-arched openings with an off-centre pend.

The western entrance elevation showcases a central buttressed and corbelled tower, which has a round-arched entrance doorway framed by pointed smooth and carved voussoirs, leading to a recessed entrance door. Above this, there is a four-light geometric tracery window and two-light louvred openings at the third stage. The three centrally-placed tiered octagonal lanterns are adorned with a decorative filigree metal balustrade on the second tier, and the tower is further embellished with a decorative stone balustrade and eight square-plan stone pinnacles topped with ornamental curved pinnacles and fine ornate metalwork finials.

The church features predominantly two and four-light geometric tracery windows, along with some plate glass timber sash and case windows on the north side, and a few fixed pane glazing. The roof is covered with grey slates.

Inside, as observed in 2007, the church has a simple, white-washed five-bay interior with a timber gallery extending to three sides and a central tall timber round-arch on the east wall. Decorative cast-iron columns support the gallery and some of the roof framework. The flat roof conceals a hammerbeam roof that is believed to be original.