Chattanooga is the fourth-largest city in Tennessee (after Memphis, Nashville and Knoxville), and the seat of Hamilton County. Located in southeastern Tennessee on Chickamauga Lake and Nickajack Lake, which are both part of the Tennessee River, Chattanooga lies approximately 104 miles (167 km) to the north-northwest of Atlanta, Georgia, 120 miles (190 km) to the southwest of Knoxville, about 135 miles (217 km) to the southeast of Nashville, and about 148 miles (238 km) to the northeast of Birmingham, Alabama. Chattanooga abuts the Georgia border, and the region is at the junction of three major interstate highways, I-24, I-75, and I-59.

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