The Creole House is a historic residence in the village of Prairie du Rocher, an old French settlement in present-day Randolph County, Illinois, United States. Built at the end of the eighteenth century and later expanded, the Creole House is the last survivor in Illinois of its type of vernacular architecture, and it forms an important part of the built environment of a portion of the Upper Mississippi Valley that possesses an unparalleled connection to the French settlement period.
Fort de Chartres was a French fortification first built in 1720 on the east bank of the Mississippi River in present-day Illinois. It was used as the administrative center for the province, which was part of New France. Due generally to river flooding, the fort was rebuilt twice, the last time in limestone in the 1750s in the era of French colonial control over Louisiana and the Illinois Country.
The magazine (ammunition storehouse) of the fort is believed to be the oldest surviving building in Illinois. A partial reconstruction now exists of the limestone fort and the site is preserved as an Illinois state park, four miles (6 km) west of Prairie du Rocher in Randolph County, Illinois. Located on the floodplain area that became known as the American Bottom, the site is south of modern St. Louis. The forts were placed on the National Register of Historic Places and recognized as a National Historic Landmark on October 15, 1966. It was named one of the contributing properties to the French Colonial Historic District in 1974, along with other French-influenced sites such as the Creole House, the Pierre Menard House, the Kolmer Site (a former Indian village), and the site of Fort Kaskaskia.
The French Colonial Historic District is a historic district that encompasses a major region of 18th-century French colonization in southwestern Illinois. The district is anchored by Fort de Chartres and Fort Kaskaskia, two important French settlements and military posts in what was then the Illinois Country. The Kaskaskia village site is also included within the district; it includes the Pierre Menard House, the only surviving building from Illinois' first state capital. Over a dozen French houses in Prairie du Rocher are also part of the district, including the poteaux-sur-sol Creole House and the 1735 Meilliere House. In addition to the French sites, the district also includes several Native American archaeological sites, such as the Modoc Rock Shelter, the Kolmer Site, the Waterman Site, and the Henke Site.
The district was added to the National Register of Historic Places on April 3, 1974.