A huge, circular Rose window made of stained glass & stone tracery that is typically found on church transept ends and facades.
In Gothic architecture, a decorative circular window with stained glass glazing is known as a rose window, also known as a wheel window. Circular windows with decorations were occasionally seen throughout the Romanesque era. But it wasn't until mid- 12th century that the concept of using a round window as a rich ornamental element first emerged.
During this period, the plain rose window started to serve as a defining feature of many early Gothic and transitional churches. The west end of the aisle and the ends of the pendentives were where it was mostly used. The development of bar latticework in the 13th century provided rose window design a strong drive
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