"The Westborough" a Frank Betz design built by Radius Homes, LLC in Jefferson Park. Brick exterior with TimberPine for accents, defining 5200 sq. ft. with 4 bedrooms, 5 baths. Lake view. Irrigation system. Select your interior preferences now. Knoxville is located in the Tennessee Valley between the Great Smoky Mountains and the Cumberland Plateau in the southern portion of the Appalachian Mountain chain and is situated on the banks of the Tennessee River. The temperate climate features four distinct seasons which makes the area very appealing for all types of outdoor activities. Tennessee is a state with no income tax.