[Cochran Mill Park - 800 acre park located in Located in Chattahoochee Hills, Georgia - Cochran Mill Park Located in Chattahoochee Hills Georgia, just 20 miles southwest of the Atlanta Airport, Cochran Mill Park, with 800 acres of woods, fields, and streams, features stunning waterfalls, huge boulders, rock outcrops, wildflowers, native azaleas, mountain laurel, and the ruins of 3 historic mills. In 2010, donations from almost 400 local families in the City of Chattahoochee Hills allowed the City to purchase Cochran Mill Park from Fulton County.]