The centrepiece, a colourful dragon with wings, was depicted in intricate detail. The craftsman's skill illuminated the dragon through a stunning mosaic of colours, its vibrant presence captured on a yellow rectangular panel framed with thin black lines. This was no ordinary work, but a large stained-glass window. It dominated the city cathedral with hypnotic allure, especially its central feature - an up-close view of the dragon's eye, so carefully crafted that it seemed startlingly real, a watchful overseer of the city.