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
Spire light Spire light Spire light (Fr. "lucarne"), the term given to the windows in a spire which are found in all periods of English Gothic architecture, and in French spires form a very important feature in the composition. There is an early example in the spire of the cathedral at Oxford; they are not glazed, and have occasionally, if of large size, transoms to strengthen the mullions. The term lucarne is used in France to mean "dormer window". They take many different forms which distinguishes the form of small roof above the window. "à chevalet" (straight lucarne), lucarne avec saillie and