Gothic architecture the tallest cathedral tower in France is Rouen Cathedral, and Cologne Cathedral (151.0 meters or 495 feet) is the tallest cathedral in Europe. The Gothic Old St Paul's Cathedral (1087–1314) had been the tallest cathedral in England until it was destroyed by the Great Fire of London in 1666. Today the tallest combined Gothic tower and spire in the UK belongs to Salisbury Cathedral, (123 meters or 404 feet), built 1220–1258. In Italy, the tower, if present, is almost always detached from the building, as at Florence Cathedral, and is often from an earlier structure. In France and Spain, two
Strasbourg Cathedral together represent some of the earliest uses of architectural drawing. The work of Professor Robert O. Bork of the University of Iowa suggests that the design of the Strasbourg façade, while seeming almost random in its complexity, can be constructed using a series of rotated octagons. The north tower, completed in 1439, was the world's tallest building from 1647 (when the spire of St. Mary's church, Stralsund burnt down) until 1874 (when the tower of St. Nikolai's Church in Hamburg was completed). The planned south tower was never built and as a result, with its characteristic asymmetrical form, the cathedral