Marengo County, Alabama contains some of the most beautiful historic homes and landmarks in the state of Alabama. 28 of these sites are listed in the National Registry of Historic Places and 19 others are listed on the Alabama Register of Landmarks and Heritage. All showcase the beautiful, rich history of this area. Known as one of the counties in the Black Belt, referring to the dark soil that has contributed to the thriving agricultural industry, Marengo County is home to farming, and timber communities.