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
Cathedral of The Isles designed St Ninian's Cathedral in Perth. Construction finished in 1849 and the cathedral opened in 1851. Formal gardens and woodland surround the cathedral, the tallest building on Great Cumbrae and the smallest cathedral in the British Isles. In the entrance porch is an interesting collection of Celtic crosses, all of which were excavated on the island in Victorian times. Cathedral of The Isles The Cathedral of The Isles and Collegiate Church of the Holy Spirit is a cathedral of the Scottish Episcopal Church in the town of Millport on the Isle of Cumbrae. It is one of the two cathedrals