Salisbury Cathedral and Chichester Cathedral, 1402 to 1861) and fallen down; instead, Salisbury became the tallest church spire in the country on the collapse at Lincoln in 1549. The large supporting pillars at the corners of the spire are seen to bend inwards under the stress. The addition of reinforcing tie-beams above the crossing, designed by Christopher Wren in 1668, halted further deformation. The beams were hidden by a false ceiling, installed below the lantern stage of the tower. Significant changes to the cathedral were made by the architect James Wyatt in 1790, including replacement of the original rood screen and demolition
Cathedral of the Immaculate Conception, Sligo needed replaced. He engaged George Goldie, one of the foremost Catholic architects in England in the nineteenth century, and the Cathedral was opened for divine worship on 26 July 1874 by Cardinal Paul Cullen of Dublin. The cathedral was built in a Norman style, and it is the only Norman styled cathedral in Ireland. It can seat 1400 people. It has an impressive spire at the front and large apse in the Sanctuary. Cathedral of the Immaculate Conception, Sligo "This article refers to the Roman Catholic cathedral. For the Church of Ireland cathedral, see St John the Baptist Cathedral, Sligo."