Elkhorn Tavern in Pea Ridge, Arkansas, is a reconstructed 19th-century frontier inn that became one of the most important landmarks of the Civil War’s Battle of Pea Ridge (also known as the Battle of Elkhorn Tavern). Originally built around 1833 and later expanded by Jesse Cox, it served before the war as a tavern, trading post, post office, and community gathering place. During the March 1862 battle, the building sat directly in the center of the fighting, sheltering the Cox family in its cellar while Union and Confederate forces clashed around it; it was used as a field hospital and briefly as a headquarters, and was heavily damaged but survived the engagement before being rebuilt. Today it stands within Pea Ridge National Military Park as a preserved historic site that interprets both frontier life and one of the most pivotal Civil War battles in the Trans-Mississippi Theater.