Embroidery is one of the older decorative arts, and has been practiced for centuries from Europe to China. It involves creating a design using colored thread on cloth, often with other pieces of colored cloth sewn on. Lots of different designs are possibly using different stitches, or combination of them. Embroidery can be done by hand, or on a machine, or a combination of both.
This image mimics both machine and hand sewing techniques, but it's all digital.
The Bayeux Tapestry (Which is 20 inches tall and 231 feet long. Yes, feet.)
The Unicorn Tapestries at the Metropolitan Museum of Art