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
St Paul's Cathedral, Melbourne the central spire, named the Moorhouse Spire, was completed to its full height of 312ft (95m), St Paul's became the tallest structure in central Melbourne and dominated the city's skyline when viewed from the south. The 1960s saw extensive work completed to the exterior of the cathedral and in 1989 the organ was restored with the help of a major National Trust appeal. Further major restoration works were completed in 2009 with significant repairs to the spires, the installation of a coloured glass Lantern in the Moorhouse Tower, and coloured glass doors and a glass walled airlock at the Great