Poteaux-sur-sol in the context of "French Colonial Historic District"

The Ste. Genevieve National Historical Park, established in 2020, consists of part or the whole of the area of the Ste. Genevieve Historic District, which is a historic district encompassing much of the built environment of Ste. Genevieve, Missouri, United States. The city was in the late 18th century the capital of Spanish Louisiana, and, at its original location a few miles south, capital of French Louisiana as well. A large area of the city, including fields along the Mississippi River, is a National Historic Landmark District designated in 1960, for its historically French architecture and land-use patterns, while a smaller area, encompassing the parts of the city historically important between about 1790 and 1950, was named separately to the National Register of Historic Places in 2002.

Ste. Genevieve is home to one of the highest concentrations of distinctive types of French colonial architecture known as poteaux en terre, or post in ground, and Poteaux-sur-sol, or post on sill. Both of these styles involve construction of walls consisting of vertical logs, the former placed directly into the ground, and the latter onto a horizontal sill of wood or stone. Prominent local examples of these architectural styles include the Beauvais-Amoureux House, the Felix Vallé House State Historic Site, La Maison de Guibourd, the Delassus-Kern House, and the Louis Bolduc House (itself listed separately as a National Historic Landmark). In 2018, the National Park Service was authorized to establish Ste. Genevieve National Historical Park as a unit of the U.S. national park system, following a favourable study by the park service. It joined the park system on October 30, 2020.