Ornament in Eichstätt 

This is a detailed drawing of a Gothic window, created by Karl Ballenberger, a German architect active in the 19th century. This drawing, likely a design for a stained glass window, showcases intricate interlacing patterns of circles and arcs, typical of Gothic architectural ornamentation. It is a study in the delicate geometric complexity of Gothic design, which uses mathematical precision to create captivating visual effects. This drawing, now part of the Städel Museum's collection, offers a fascinating glimpse into the artistic practices of the time.