The Spire by William Golding

Dean Jocelin has a vision: that God has chosen him to erect a great spire on his cathedral. His mason anxiously advises against it, for the old cathedral was built without foundations. Nevertheless, the spire rises octagon upon octagon, pinnacle by pinnacle, until the stone pillars shriek and the ground beneath it swims. Its shadow falls ever darker on the world below, and on Dean Jocelin in particular.

From the author of Lord of the Flies, The Spire is a dark and powerful portrait of one man's will, and the folly that he creates.