Old St Paul's Cathedral in length including the portico, and across the transepts, and Winchester Cathedral, the longest remaining medieval church, is long and across the transepts. The cathedral had one of Europe's tallest church spires, the height of which is traditionally given as , surpassing all but Lincoln Cathedral. The King's Surveyor, Christopher Wren (1632–1723), judged that an overestimate and gave . William Benham noted that the cathedral probably "resembled in general outline that of Salisbury, but it was a hundred feet longer, and the spire was sixty or eighty feet higher. The tower was open internally as far as the base of
Truro Cathedral work on the central tower and spire has begun. Restoration work is being carried out by W. R. Bedford; Stuart Aston, managing director, said that the problem is the Bath Stone used on the more decorative areas of the cathedral, has not stood up well to the salts and sand in the maritime climate of Cornwall. Erosion of the stonework has left much of the exposed stonework in such a damaged condition that it resembles honeycomb. Funding for the restoration of the tower and spire has been partly met by grants from English Heritage, Friends of Truro Cathedral, the Heritage