Downtown Knoxville is the downtown area of Knoxville, Tennessee, United States. It contains the city's central business district and primary city and county municipal offices. It is also home to several retail establishments, residential buildings, the city's convention center, and World's Fair Park. The downtown area contains the oldest parts of Knoxville, and is ho…Downtown Knoxville is the downtown area of Knoxville, Tennessee, United States. It contains the city's central business district and primary city and county municipal offices. It is also home to several retail establishments, residential buildings, the city's convention center, and World's Fair Park. The downtown area contains the oldest parts of Knoxville, and is home to the city's oldest buildings.