The Rhea-McEntire House is a historic antebellum Greek Revival mansion located along the shoreline of the Tennessee River's Wheeler Lake in Decatur, Alabama. The house was constructed prior to 1836, and was used as headquarters by both Union and Confederate forces, alternately, during the Civil War. In 1862, before being occupied by Federal forces, the plans for the Battle of Shiloh were laid out within this building. Because of this, the house was spared when the city was burned, leaving only 2 other buildings standing in the city.