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 English churches, to a "better manner of architecture". It has the longitudinal Latin Cross plan of a medieval cathedral. It is of one-and-a-half stories and has classical porticos at the west and transept ends, influenced by Inigo Jones’s addition to Old St Paul's. It is roofed at the crossing by a wide shallow dome supporting a drum with a second cupola, from which rises a spire of seven diminishing stages. Vaughan Hart has suggested that influence in the design of the spire may have been drawn from the oriental pagoda. Not used at St Paul's, the concept was applied in