The sod house or soddy was an often used alternative to the log cabin during frontier settlement of the Great Plains of Canada and the United States in the 1800s and early 1900s. Primarily used at first for animal shelters, corrals, and fences, if the prairie lacked standard building materials such as wood or stone, sod from thickly-rooted prairie grass was abundant, free, and could be used for house construction. Prairie grass has a much thicker, tougher root structure than a modern lawn.

Harkema is a village in the municipality of Achtkarspelen, Friesland province, the Netherlands.