Best Historic Region

The Northern Great Plains is a vast temperate grassland ecoregion spanning portions of Montana, North Dakota, South Dakota, Nebraska, and Wyoming in the United States, and extending into the Canadian provinces of Alberta, Saskatchewan, and Manitoba. It is characterized by mixed-grass and shortgrass...

The Osage Hills is a region of rocky, rolling terrain in northeastern Oklahoma associated with the lands of the Osage Nation. The area became economically significant during the early 20th-century Osage oil boom, when petroleum was discovered beneath Osage allotments. The region is also associated w...

The Coteau des Prairies is a prominent glacial plateau extending across parts of South Dakota, North Dakota, and Minnesota. Composed primarily of glacial deposits, it rises distinctly above the surrounding flat plains and forms a geographic divide between the Red River valley and the Missouri River...

The Missouri Coteau is a massive plateau of glacial hills spanning the United States and Canada, notable for separating the Missouri River basin from the northern Great Plains. This distinct escarpment was formed by glacial action during the last ice age, resulting in a rugged landscape characterize...

The Southern Great Plains is a vast, semi-arid shortgrass prairie ecoregion located in the United States, primarily spanning across Texas, Oklahoma, and New Mexico. The landscape is dominated by drought-resistant grasses such as buffalo grass and blue grama. Historically, the region served as the he...

South Puget Sound prairies are grassland ecosystems occurring on gravelly glacial-outwash soils in western Washington. Indigenous burning and later agricultural practices helped maintain open conditions that would otherwise tend toward shrubland and forest. The remaining prairies support specialized...

The Black Belt Prairie is an ecoregion in Mississippi and Alabama, notable for its fertile, dark soils derived from chalk that historically drove intensive cotton agriculture in the 1800s.

The Central Great Plains is a vast US grassland region, notable as a transitional zone between tall and shortgrass prairies that is now heavily used for winter wheat production.

Camas Prairie is a geographic region in Idaho, notable as a traditional Nez Perce harvesting ground for camas root and as the namesake of the historic Camas Prairie Railroad built in 1909.

The Willamette Valley Prairie is an endangered grassland ecosystem in Oregon, historically maintained by Indigenous burning and now reduced to a tiny fraction of its original acreage.

The Cajun Prairie is a highly endangered coastal grassland ecosystem in southwestern Louisiana where less than one percent of the original habitat remains today.

The Prairie Peninsula is an eastward extension of North American tallgrass prairies into the Midwest, an ecological concept first mapped by botanist Edgar Transeau in 1935.

The Fort Worth Prairie is an ecoregion in north-central Texas noted for its thin limestone soils and its historical role as a grazing frontier in the American West.

The Grand Prairie is a vast historic tallgrass prairie region in central Illinois, notable for its exceptionally rich soils that now support intensive agriculture.

The Fayette Prairie is a coastal prairie region in south-central Texas, recognized for its distinctive claypan soils and diverse native grassland communities.

The Black Prairie is a US ecoregion notable for its dark, alkaline soils derived from chalk bedrock, which historically made the region a major center for intensive cotton cultivation.

The Grand Prairie of Arkansas is a historic natural grassland region in the state's Mississippi River basin, famously converted into a major rice-producing agricultural center.

The Grand Prairie of Texas is a subdivision of the Blackland Prairie ecoregion in the United States, notable for its dense clay soils and high agricultural productivity.