Coventry Cathedral bronze effigy and tomb of its first bishop, Huyshe Yeatman-Biggs, survived. The ruins of this older cathedral remain hallowed ground and are listed at Grade I. Following the bombing of the medieval cathedral in 1940, Provost Richard Howard had the words "Father Forgive" inscribed on the wall behind the altar of the ruined building. The spire rises to 90 m (295 ft) and is the tallest structure in the city. It is also the third tallest cathedral spire in England, with only Salisbury and Norwich cathedrals rising higher. The current St Michael's Cathedral, built next to the remains of the
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