Tron Steeple, 71 Trongate, Glasgow

Tron Steeple, built between 1630 and 1636, is a four-stage square tower located independently of the John Adam replacement of the original church, known as Tron Kirk. The tower features Tudor arches at the ground level, which were opened in 1855 by architect John Carrick. It has a tall stone facetted spire and harled walling with painted moulded architraves.

The ground floor, originally the position of the Tron, has been altered to allow for passage beneath the Tudor arches. Inside, there is a groin vaulted ceiling with mask-stops and a central boss. The second stage of the tower has cusp-headed windows, while the third stage features cusped bipartite windows. The fourth stage has clock faces, and the south elevation has the lower two stages blind with a single window at the fourth stage. Moulded string courses separate each floor, and there are moulded eaves corbels along with a shallow projecting painted ashlar silhouette balustraded parapet with pinnacles at the corners.

Rising from the tower is a tall octagonal spire made of stone, adorned with a vertical line of roll moulding at the angles. The lower part of the spire has bipartite traceried lucarnes, with a single light cusped window above. There is a projecting crown balustrade at the midway stage, small lucarnes above, and small pinnacles encircling the top of the spire.