St Mary's Episcopal Church, Dalmahoy Estate

St Mary's Episcopal Church, on the Dalmahoy Estate, was built in 1850 by John Henderson. It is a simple rectangular Gothic church with a north aisle, a vestry to the northeast, and a porch to the south. The church is constructed of squared and stugged honey-coloured sandstone with ashlar dressings and margins.

The south elevation features a four-bay nave and a lower, two-bay chancel at the east end. A gabled stone porch is located on the outer left, with diagonal buttresses framing the entrance. The porch has a moulded pointed arch carried on sandstone colonettes, a blind lancet in the gablehead, and a cross finial. Red and black Minton tiles with a fleur-de-lis and lion motif are present. The chamfered door surround has a datestone inscribed "AD 1850" above the keystone, above a studded wooden door. To the right of the porch are three symmetrical bays with lancet windows separated by buttresses. The lower two bays of the chancel are recessed on the outer right, and feature two-light windows under the eaves with colonette mullions.

The east elevation is a gable with a three-light East window and diagonal buttresses. To the right is the recessed east return of the north aisle, which contains a small, two-light lancet window at its center.

The west elevation is also a gable, with a two-light traceried window at the center and diagonal buttresses. The gable is capped by a gabletted bellcote featuring two pointed arches with a pierced quatrefoil in the spandrel. A recessed porch return is located to the left.

The north elevation is asymmetrical, with a gabled north aisle to the outer left, featuring a porch entrance on the west side at the re-entrant angle between the taller penultimate bay and the aisle. Three symmetrical bays are to the outer right, with lancet windows divided by buttresses. The north gable has a two-light window, a cross finial, and set-back buttresses. A lean-to porch incorporates a pointed arch, a studded door, and small two-light lancets on the north return.

Diamond-pane leaded lights are fitted (now all with grilles). The roof is covered with graded grey slate, featuring saw-tooth ashlar coping to the skews and fleur-de-lis iron ridge cresting. A truncated coped ridge stack is on the north side.

The interior, dating from 1850, has been subject to later additions and remodelling in 1883. A chancel arch is painted with the faded psalm text, "I will wash my hands in innocence and join the procession round your altar O Lord." The ribbed ceiling is painted deep blue with stars. A stone altar is situated under the east window, painted and gilded with foliage capitals, and features painted medallions depicting a pelican and a conquering lamb. Minton tiles are also present. Other features include a Gothic sedilia, piscina, and Easter sepulchre, as well as stained glass of various dates. An organ by Hamilton of Edinburgh is located on the north side of the chancel; it was repositioned in 1883 from its original location at the northeast end of the chancel. A Gothic pulpit is situated in the southeast corner of the nave. A stone font is at the west end, along with stained glass memorial windows and brass corona chandeliers.