Chattanooga is the fourth-largest city in the U.S. state of Tennessee with a population of 167,674 (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 to the north-northwest of Atlanta, Georgia, to the southwest of Knoxville, about to the southeast of Nashville, and about 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.The city, which has a downtown elevation of approximately, lies at the transition between the ridge-and-valley portion of the Appalachian Mountains and the Cumberland Plateau. The city is therefore surrounded by various mountains and ridges. The official nickname for Chattanooga is the Scenic City.

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