Cob houses, made of sculpted soil, straw, mud, and sand, were once popular in England. Sloping lines, arches, and alcoves define a cob house. Hobbits tend to live in cob houses. Cob homes are durable, warm, windproof, and work well even in cold climates.
Cob houses are still built today. Modern day cob houses have all the amenities of any new home, but with a unique, rustic look and feel. This style of building works great for smaller projects like walls, sculptural works, or garden sheds.
Wikipedia describes cob houses this way:
“Cob, cobb or clom (in Wales) is a building material consisting of clay, sand, straw, water, and earth, similar to adobe. Cob is fireproof, resistant to seismic activity, and inexpensive. It can be used to create artistic, sculptural forms and has been revived in recent years by the natural building and sustainability movements.”