Chattanooga is a city in Tennessee, United States. It is the fourth-largest city in the state and the county seat of Hamilton County. It is located on the Tennessee River, at the foot of Lookout Mountain.
Chattanooga is a major economic and cultural center for the region. It is home to a number of Fortune 500 companies, including BlueCross BlueShield of Tennessee, Unum, and Cigna. The city is also a major tourist destination, with attractions such as the Tennessee Aquarium, the Chattanooga Choo Choo, and the Lookout Mountain Incline Railway.