St Mary's Parish Church, Haddington

St Mary's Parish Church in Haddington dates from the late 14th to late 15th centuries. It is a cruciform structure measuring 206 feet long, 32 feet wide, and 113 feet across the transepts, which are 30 feet wide. The church features a nave with five bays and a chancel with four bays, both of which have aisles and clerestories. The transepts are aisleless and there is a central tower that once had a crown, constructed from ashlar stone with slated roofs.

The nave is supported by pinnacled buttresses and includes a round-arched double-opening west door, with a six-light window above it. Inside, the church has clustered piers at the arcade. Originally, the aisles had masonry vaults, which were removed, and the arches of the arcade were raised to accommodate galleries designed by James Burn under Archibald Elliot in 1811. New plaster vaults were added to both the nave and aisles at this time, along with crenellated parapets and new pinnacles. The galleries were later removed, and the church was refurnished by George Henderson in 1891.

The transepts were roofless with the northwest angle missing until 1971, when they were rebuilt and reroofed by Ian G Lindsay and Partners, with vaults replaced in fiberglass to match the original design. The tower was also reroofed and vaulted. The choir walls are similar to those of the nave but remain unaltered. The aisle windows are two-light instead of the three-light windows found in the nave; these were repaired in 1858 and 1866, and the tracery of the four-light east window was replaced in 1877. Further repairs and underpinning occurred between 1926 and 1930, and the church was restored and reroofed again in 1971-72 by Ian G Lindsay and Partners, with fiberglass vaults over the main vessel and aisles replicating the original design.

On the north side of the choir, there is a vestry that was partly rebuilt and features a 17th-century pointed barrel vault. A notable double-arched monument to the 1st Lord Maitland, who died in 1595, and the 2nd Lord Maitland, is made of white and black marble with alabaster effigies of both lords and their wives. The church also contains a stained glass window by John Stirling, created by William Wilson in 1946, as well as earlier glass of interest, some of which was made by Heaton Butler and Bayne.