Apostolic Church, 340, 342 Cathedral Street, Glasgow

The Apostolic Church, located at 340-342 Cathedral Street in Glasgow, is a former Masonic Lodge built by George Arthur & Son between 1913 and 1914. This 3- and 4-storey building showcases Edwardian Baroque architecture and is constructed from red sandstone ashlar, situated on a corner site with a sloping ground.

The south elevation facing Cathedral Street features a five-bay design arranged in a 1-3-1 pattern. At the ground level, there are windows with an ashlar bracketed balcony above, which includes balusters and a panelled parapet. This balcony is positioned above tall French windows on the first floor. Above this, there is a carved and inscribed dedicatory panel, topped with a cornice that curves at the center, serving as a cill course for the second-floor windows. The central bays on the first and second floors are framed with panelled giant pilasters, connected at the eaves by a cornice and balustrade with dies. To the right, there is an entrance at the base of a five-stage corner tower, featuring a round-arched doorway with Gibbsian voussoirs. The first, second, and third floors have regular fenestration in recessed panels, with the towerhead breaking the eaves and showcasing column-framed windows, along with a projecting balustrade at the eaves. The corner is chamfered above the ground. The outer left bay has a plain round-arched doorway, with tripartite windows above it on the first, second, and third floors, and a plain wallhead parapet.

The east elevation on North Frederick Street consists of ten irregular bays arranged in a 1-2-1-6 grouping. The three bays on the left turn the corner of the principal elevation, featuring a window on each floor of the corner tower, which is detailed similarly to the main elevation. To the left, there is a two-bay pedimented gable with bipartite windows on each floor, while the right side is mostly blank except for a window on the third floor, framed above ground with giant panelled pilasters. Windows on the flanking stair bay to the right are positioned on the rising ground. The remaining six bays display near-regular fenestration, with giant pilasters separating the first and second floors and an overhanging eaves course.

The interior was not seen during the last inspection in 1999, and modern glazing has been installed.