Barthol Chapel Church was built in 1875 in memory of George Hamilton-Gordon, 6th Earl of Aberdeen who was lost at sea. The architect was William Smith of J & W Smith.
The church is rectangular on plan and has an entrance porch, small tower and a vestry. It is built of roughly-finished granite blocks with contrasting light grey door and window surrounds. The large double-pitch roof is slated and has small dormer vents on each side.
There is a large central window comprised of three pointed-arch (lancet) openings, linked by a simple hoodmould. Standing in front of the window is a simple granite World War memorial. In the gablehead is a small clockface, inserted in the 1930s.
The south elevation has a gabled porch at the west end. It has small corner buttresses and a large, recessed pointed-arch doorway in the south face. Within is a shoulder-arched door with a recessed fanlight panel above, in which is inscribed a passage from one of the Psalms.
The interior of the church is little-altered since it opened in the 19th century. It has a fine barrel-vaulted wooden roof structure, which is supported on stone corbels set in the side walls.
In the south wall is a very fine stained glass memorial window, depicting Christ as The Good Shepherd and by Atkinson Brothers of Newcastle. The war memorial is by J A Ogg Allan (1919).