National Historical Park

Green Tree Tavern – Missouri’s Oldest Standing Building and a Window Into Frontier History Standing across from the famed locus of Jour de Fête in Sainte Geneviève, the Green Tree Tavern represents more than just historic architecture—it’s a living chronicle of American frontier life, cultural convergence, and the diverse lives that shaped the westward expansion. As the oldest verified building in Missouri, scientifically dated to 1790 through dendrochronology, this French colonial structure has served as family home, gathering place, inn, tobacco shop, and the meeting hall for the first Masonic Lodge west of the Mississippi River. Now part of Ste. Genevieve National Historical Park, Green Tree Tavern offers visitors a tangible connection to the complex, layered history of America’s heartland. A Building That Tells Multiple Stories What makes Green Tree Tavern exceptional isn’t just its age—it’s the remarkable diversity of human experiences that unfolded within its walls. Built by Nicolas Janis, a French Canadian immigrant from Kaskaskia, Illinois, the structure became home to his family and the fifteen people they enslaved. This uncomfortable truth sits at the foundation of Green Tree Tavern’s story, reminding us that Missouri’s early settlement depended on the forced labor of enslaved African Americans whose experiences Read more...

Jean-Baptiste Vallé House – Ste. Genevieve National Historical Park Standing as one of the most architecturally significant and historically important structures in Ste. Genevieve, the Jean-Baptiste Vallé House represents both the architectural sophistication of French Creole building traditions and the political power that once resided in this Mississippi River community. Now part of the Ste. Genevieve National Historical Park and operated by the National Park Service, this imposing residence tells the story of colonial governance, architectural evolution, and the dedicated preservation efforts that saved it for future generations. Architectural Significance: Poteaux-sur-Solle at Its Finest The Jean-Baptiste Vallé House stands as a large and impressive example of “poteaux-sur-solle” (post on sill) construction—one of the distinctive French Creole building methods that make Ste. Genevieve architecturally unique in the United States. Unlike the rarer “poteaux-en-terre” (posts in earth) construction where vertical logs are set directly into the ground, the poteaux-sur-solle method places vertical log posts on a horizontal wooden sill beam that rests on a stone foundation. This elevation above ground level protects the wooden posts from moisture and rot, resulting in far greater durability—which explains why this particular house has survived for more than two centuries. The house’s size alone commands attention. Read more...