St Mirin's Cathedral stands on Incle Street in Paisley, at the junction with Glasgow Road. It is the mother church of the Catholic Diocese of Paisley. Thomas Baird designed the building in a neo-Romanesque style, with a plain sandstone exterior and an arched interior. It is about 109 feet (33 meters) long, not counting the chancel, and about 48.5 feet (14.8 meters) wide, and it holds around 1,300 worshippers. The chancel is semi-octagonal and mainly of Italian marble.
It was completed in 1931 and formally opened in 1932. It replaced a church of 1808, the first stone-built Catholic church in Scotland after the Reformation. The diocese was founded in 1947, and the building became a cathedral in 1948.
The pulpit is by Gillespie, Kidd and Coia, and the Art Deco Stations of the Cross are on ceramic tiles.

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