A cathedral window quilting pattern is a traditional design that mimics the curves of cathedral windows. It produces a unique quilt that requires no batting or backing fabric.
To make a cathedral window project, quilters use precise folding and curved seam techniques to produce the individual squares that feature "windows" of fabric. They then sew the squares together to construct the final project. Quilters traditionally piece the squares by hand, but some have developed sewing machine techniques for this design.
The cathedral window quilt design became popular in the early 1900s. It is affordable to make because it can use large amounts of inexpensive fabric, such as muslin and cheesecloth, to surround small pieces of more expensive fabric. Craftsy.com provides links to instructions for three different cathedral window pattern projects.