The 12th Century saw the move away from the Romanesque architecture which had typified the preceding centuries to the era of the great gothic cathedrals which were to become the architectural symbol of the middle ages. Numbers and geometry had acquired a metaphysical significance and were believed to have occult symbolism and power. The introduction of sacred geometry into all aspects of the design of places of worship was therefore inevitable.

Gothic cathedrals, grand religious structures erected in the Middle Ages, shared the essential characteristics of beauty, functionality, and religion. Certain aspects make up and define these cathedrals as magnificent works of art -- from the materials used, such as wood, stone, gold, stained glass, and external details like gargoyles; to the advanced architectural techinques of the day, including the ribbed vault, the spire, and the flying buttress.

Compares and contrasts the Gothic and Romanesque styles behind the two west towers of Chartres Cathedral.

Essay on Grace cathedral and how it compares to cathedrals build in Europe centuries ago.