The fictional Boar’s Nest is based on a real Boar’s Nest bar from the area where Jerry Rushing used to run moonshine. His stories were the basis for both Moonrunners and The Dukes of Hazzard.
The building used for the Boar’s Nest in the early (Georgia filmed) episodes of The Dukes of Hazzard is located at 290 Flat Rock Rd, Oxford, GA. Since 2008, the location has been used by the New Vision Baptist Church (aka New Vision Church Ministries). The original building was still present as recently as May 2014 (Google street view), but New Vision’s 2017 website highlights a Building Fund Campaign (presumably to replace or expand the original building).