Salisbury Cathedral almost two centuries. The cathedral is also the subject of William Golding's novel "The Spire" which deals with the fictional Dean Jocelin who makes the building of the spire his life's work. The construction of the cathedral is an important plot point in Edward Rutherfurd's historical novel "Sarum", which explores the historical settlement of the Salisbury area. The cathedral has been mentioned by the author Ken Follett as one of two models for the fictional Kingsbridge Cathedral in his historical novel "The Pillars of the Earth". It was also used for some external shots in the 2010 miniseries based on
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