St Mary's Cathedral

Tuam Cathedral, built between 1827 and 1837, is one of the finest examples of Gothic Revival architecture in Ireland. The construction of a Catholic cathedral was necessary because the 14th century St Mary's Cathedral had been given over to Anglican worship under Elizabeth I and public Roman Catholic worship had been banned for two hundred years.

St Brendan's Cathedral, Annaghdown, was an Episcopal church founded in the 12th century which struggled for centuries to be recognised in a dispute with the Archdiocese of Tuam. After the Reformation in the 16th century, the church was used as an Anglican parish church and underwent its last structural alteration in 1798, particularly on the south side.

Considered to be one of the "last great stone cathedrals of Europe", the Galway cathedral was constructed in 1965 on the site of the old city prison. It is today one of the largest and most iconic buildings in the city.